"No, absolutely not, even if you try, you have to try him!" After thinking of such a scene, Xiao Yan was naturally uncomfortable with all the cells in his body.

"Try it out, can it work?" Senior Brother Xiao Yan ......" Ruolan stared at Xiao Yan with some hesitation, because usually Teacher Liu told them a thousand times, and ten thousand instructions told them to have a rigorous and serious attitude towards these spells and seals, and the things in knowledge were not a little sloppy, and they were attacked by spells, which was not a joke.

"It's okay, let's try to measure its height, although this is a bit tricky, but now there is no way......" Although Xiao Yan also had a trace of hesitation, but thinking that once Xiao Ming woke up, he would be decisively abandoned by Ruolan, this situation, Xiao Yan was absolutely unbearable, after a trace of hesitation flashed, Xiao Yan's face changed to resolute.

"Go!"

After speaking, Xiao Yan commanded his ruler to lean towards the triangle, and leaned in the straight direction as much as possible.

"28 centimeters!" Sister Ruolan wrote down!" Soon, Xiao Yan came up with the height of the triangle.

"Well, I made a note of it. ”

"Then I'll calculate, the area of this triangle, the bottom edge is 80 centimeters, the height is 28 centimeters, the base is multiplied by the height divided by two, 80*28\/2, uh...... Multiplication of two-digit numbers?"

The area of the triangle is really a roadblock, Xiao Yan looked at the equation he listed, and frowned again. Because, he can barely use the area formula of the triangle is already considered powerful, after all, the area formula of the triangle can only be mastered in the fourth grade, but now there is a two-digit multiplication multiplication, and the multiplication of these two-digit numbers is obviously only mastered in the fourth grade.

"Senior Brother Xiao Yan, this multiplication method is so subtle and complicated......" Ruolan also frowned when she looked at it.

"This ...... Let me think about it...... Let me think about it...... "Xiao Yan's forehead was already sweating, there was no way, the difficulty of this question had exceeded his imagination. Xiao Yan has only mastered the multiplication of two digits by one digit now, and now this problem is obviously multiplying two digits, which is a bit difficult. Especially now that he is still stared at by Ruolan's big eyes, Xiao Yan has to ensure that his head is calm while blushing and heartbeating.

Therefore, this question is even more difficult for him.

"Eighty times twenty-eight...... Eighty, eighty...... Hey, there's a zero behind this eighty!" Xiao Yan held the pen and didn't know how to do it for a while, because the multiplication of two digits is simply a problem. However, when his eyes saw eighty several times, he suddenly cried out in surprise.

"Haha...... You see, there is a zero after this eighty, and I can now treat the zero after this eighty as nothing, so that it becomes a multiplication of two digits multiplied by one digit, and then when the result is obtained, add a zero to the result...... Ha ha...... I realize, I realize!" Xiao Yan suddenly laughed loudly, and then, Xiao Yan's whole body suddenly flashed a white light, and then, Ruolan felt a large aura in the air pouring in from Xiao Yan's Baihui acupoint, and Xiao Yan's whole person's breath actually strengthened by one point at this moment, and he steadily stepped into the realm of the late third grade.

"Senior Brother Xiao Yan, enlightened?" Ruolan was puzzled, how could Xiao Yan suddenly realize it.

"Haha...... Yes, yes, Sister Ruolan, I realized, when I came to the Olympiad battlefield before, my eldest brother gave me special tutoring, and when he talked about learning before, I still had doubts about this two-digit multiplication...... Ha ha...... Now I suddenly realized...... Haha...... "Feeling that he was getting stronger again, Xiao Yan was excited.

The reason why he broke through just now was entirely because he had passed such an equation, and realized that in the future, if there is zero behind the two-digit multiplication, he can first discard the zero, wait until the calculation result is calculated, and then add the zero to the front, which is also a set of rules, so Xiao Yan's realm in the late third grade has accidentally taken a step forward.

"Congratulations, Senior Brother Xiao Yan. Ruolan naturally smiled when she heard Xiao Yan's explanation.

"Well, okay, now that this problem has been solved, then I'll do the math. Xiao Yan was affirmed by Ruolan, his heart was as sweet as eating a jar of honey, he restrained his smile and squatted down again.

"28*8=224, then add a zero, which is equal to 2240, and then 2240 divided by 2...... Uh, divide four digits by two?" Xiao Yan happily calculated it quickly, but the problem was naturally everywhere, Xiao Yan looked at the division of 2240 and 2, and frowned again.

"Hey, it's okay to do this, first divide 224 by 2, then equal to 112, and then add a zero after 112, which is exactly 1120!" Xiao Yan just frowned, he just understood the multiplication of two digits, zero can be removed directly, Xiao Yan was just puzzled for a second, and then thought of a solution again.

"Hah...... It's 1120, 1120 square centimeters, Ruolan, I've calculated it!haha......" Xiao Yan was immersed in his own solution, and when he suddenly solved the problem, he couldn't help but stand up violently and laughed.

"Eun, it's calculated!hehe......" Ruolan looked at Xiao Yan's happy appearance, as if she had seen a child.

"Okay, now, now we can see if we can break the seal!" After a minute or two, Xiao Yan suppressed the joy in his heart, and inadvertently saw that Xiao Ming was still recovering, knowing that now was not the time to be happy, if he wasted any more time, Xiao Ming would recover.

"Well, okay, Senior Brother Xiao Yan. Ruolan also stood up and was a little far away from Xiao Yan.

"The area of the square is 640 square centimeters, the area of the rectangle is 3000 square centimeters, the area of the triangle is 1120 square centimeters, and their total circumference is a total of 600 centimeters......" Xiao Yan took a deep breath, his eyes stared at the figure on the wall, and then flashed a set of data, this set of data, will be entered into this geometric figure by Xiao Yan in a second, because he doesn't know whether the height of the measured triangle is accurate, Xiao Yan naturally dare not be careless.

"Drink!"

The next moment, Xiao Yan ran the Chinese characters in the meridians, and the whole person jumped up directly, and then saw Xiao Yan flying quickly with a pen in his hand, and quickly left 640, 3000, 1120, 600 and other numbers in the air, these numbers flashed this white light, and quickly attacked the geometric figures on the wall, almost at the same time printed on the geometric figures on the wall.

"Buzz......" However, the next moment, a loud bang sounded, and the geometric figure on the wall suddenly burst into a strong light, and a violent aura suddenly wanted Xiao Yan to rebound.

"Poof......" Xiao Yan didn't check for a while, and was unreservedly rebounded by this powerful force, a mouthful of blood spurted out, and his whole body was bounced to Ruolan's side.

"Ah...... Senior Brother Xiao Yan!" Ruolan's eyes were quick and she quickly blocked Xiao Yan.

"Ahem...... It's okay, it's just a little bit of backlash, and this situation seems to prove that I miscalculated. Xiao Yan wiped the blood from the corner of his mouth, looked at the wall that had regained calm, and knew that the area of the triangle just now might have been miscalculated. The power of the backlash just now was not great, and Xiao Yan only felt his body shake a little.

"It seems that I have to measure again, the last time I measured, there may be some deviations!" Xiao Yan calmed down, took out the ruler again, waved his hand, and the ruler leaned towards the triangle of the wall again, at this moment, Xiao Yan became more cautious.

"This kid's brain is spinning very fast, and his understanding is also very good. Chen Lao witnessed Xiao Yan's unsealing, and saw that Xiao Yan was able to comprehend the multiplication of the whole ten of the two multiplications, and his eyes couldn't help but light up.

"Sister Ruolan, this time it's 29 centimeters, remember!" Xiao Yan quickly measured another number. However, this figure is still wrong. Now, if any junior high school student comes here and sees that it is an isosceles triangle with a waist of 50 and a base of 80, he will immediately conclude that the height of the triangle is 30 centimeters, and the Pythagorean theorem will come out with a light calculation.

Of course, Xiao Yan and the others are naturally different, their cultivation is only about the third grade, and it would be good to be able to apply the area formula of the triangle.

"Go!" A few minutes later, Xiao Yan calculated the area of the new triangle again, and let out a loud shout again, a series of numbers printed on the geometric figure on the wall.

There was a muffled "buzzing ......," and a light bounced off the wall again.

"Is it wrong again?" This time, Xiao Yan had an extra heart, and before this light could attack him, he had already dodged it.

"Senior Brother Xiao Yan, do you still want to try?" Ruolan asked again.

"Well, naturally I want to try, have you noticed, the strength of this rebounding light just now seems to be a little weaker, which means that my direction is right, so as long as I try again, I will be able to get the correct height. Xiao Yan looked confident, as if he was about to find the right answer.

"Huh...... If you measure one more centimeter this time, it will be possible to ......," Chen Lao smiled and muttered.

"Go!" The next moment, Xiao Yan persevered and commanded the ruler to fly towards the triangle again.

This time, Xiao Yan concentrated his attention for twelve points, and focused on everything he had done before. This sealing formation is so good, there must be something remarkable in it. Xiao Yan has completely bonded with this geometric figure.

"30 centimeters, Sister Ruolan!" Xiao Yan this time, as Chen Lao expected, he really came up with the correct number.

After a minute of calculation, Xiao Yan stood in front of the wall again.

"It's not a matter of three, this time it must be right!" Xiao Yan took a deep breath, looked at Ruolan next to him, and then looked at Xiao Ming in the distance, and prayed secretly.

"The area of the triangle this time is 1200, which happens to be an integer, it should be correct!" Xiao Yan operated the internal force, and the Chinese characters in the dantian instantly divided into two strands, one flowed to Xiao Yan's hand and the other to Xiao Yan's feet.

"This time, 1200!640!3000!600!Go!!"

Xiao Yan, who jumped high, waved the pen and pen to walk the dragon and snake, and in less than half a second, a series of numbers were drawn. This time, these numbers were once again printed on the pattern on the wall.

"Boom ......"

The next moment, Xiao Yan, who fell to the ground, watched his number slowly disappear into the pattern, not emitting the kind of light as before, but a low voice sounded, and the opposite wall slowly cracked.

"Hah...... It's a success!" Xiao Yan's face turned happy and shouted.

"Well, it worked!" Ruolan also walked to Xiao Yan's side and nodded heavily.

"Ding ......" The next moment, a strange sound came from a crack in the wall.

"What is this?" the two looked at each other, secretly on guard.

"Ding...... Ding ...... "The next moment, before the two of them had time to see what was happening, a burst of white light was sprinkled directly on the two of them, and in an instant, there was a strong force, and the bodies of the two of them flew up involuntarily.