Yinhou of the Three Kingdoms

If you are not proud, you will die!

Ning Rong pouted, looking at the carriage going away.

……

"What? You solved the answer?"

Ning Rong, Guo Jia, and Cui Yan were sorting out the talents who had recently come to join Cao Cao, when they saw Lu Xun running over panting with Cao Ang, Da Wa, and Er Wa.

I thought it was something important, but I didn't expect these little carrot heads to tell him that they already had a method to measure height.

Seeing the anxious and excited faces of the people, Ning Rong stretched out his hand to touch the thick book in his bosom, thinking of Fazheng just now, he felt hesitant.

"Yes! Master!" Lu Xun said to Ning Rong impatiently, with his small face flushed and sweat dripping from his forehead.

Cao Ang behind him also nodded excitedly, holding a strange looking object in his hand.

Dawa's small eyes are bright, but her expression is still serious, observing Ning Rong coldly.

"Erwa? You figured it out too?" Ning Rong turned to Erwa and smiled.

"Yes, master! Erwa can count faster than brother!" Erwa smiled sweetly.

"Okay! Erwa is smart! Come on, show me your answer!"

Ning Rong took Erwa's answer and glanced at it, then handed it to you curious Guo Jia, and by the way, told Guo Jia and Cui Yan about some of his assessment questions.

Cui Yan stared at the four children in front of him in amazement, and looked at Ning Rong suspiciously. They are all children. Can they answer such a difficult question?

Guo Jia's eyes were frighteningly bright, and he silently estimated the height of the house, then glanced at Erwa's answer, and looked at Erwa with a wider smile.

Ning Rong didn't know at all that there were express regulations on the construction of houses in ancient times, what kind of class lived in how high a house, if it exceeded the standard, it was trespassing!

Guo Jia understood, leaned forward to look at the answers of the others, and nodded secretly.

"Not bad! Although it is not accurate enough and there are errors, but... it is still correct!"

Ning Rong read the answers of several people one by one, and said affirmatively to the four staring little radish heads.

"Hehehe..."

"Ha ha……"

"whee……"

After getting the answer they wanted, several people excitedly clenched their fists and laughed.

"Zixiu, seeing that you have all the preparations, tell me, what method did you use?" Ning Rong glanced at the tools in his hand, a flat board with uneven small boards tied, feet crossed. There are six or seven.

"Yes, Master!"

Cao Ang agreed confidently, squatted down on the ground, put the tools in his hand on the ground, and began to demonstrate to Ning Rong how he measured it.

"Master, please look! The disciple puts a section of this long plank on the ground, and the small planks above will support the long plank, so... the long plank is like a hypotenuse, and the short plank and the ground form A right angle! This forms a triangle!"

Ok?

Ning Rong frowned, and couldn't help asking, "Zixiu, do you now... understand geometric calculations?"

Ning Rong carefully recalled that he didn't seem to teach them the calculation of triangles, and as for sine and cosine, he didn't even mention it.

"Hey..." Cao Ang pursed his lips and smiled smugly, happy that he had mastered the knowledge that the master didn't say.

"Master, it's Big Brother Three Fatty, Brother Zixiu got the answer from Brother Three Fatty!" Erwa complained angrily.

Uh?

Seeing Erwa's small face bulge into a bun, Ning Rong pouted secretly, what kind of generation is this!

Sanpang is as old as himself, and he is also a brother and a master!

Got it!

Now is not the time to worry about this!

"What's the matter? Zixiu?" Ning Rong turned to Cao Ang and asked.

"This... this..." Cao Ang hesitated to say why.

"Back to the master!" Lu Xun took Cao Ang's words, "This matter is all the fault of the disciple! The disciple remembered that Mr. San Pang had some knowledge about triangles before. After hearing the master's homework that day, he immediately remembered it. So I begged Mr. Three Fatty to explain the knowledge of triangles to you... and then... just like you!"

Oh?

Ning Rong looked at Cao Ang's nodding vigorously, thinking to himself, so this is the case, it seems that he misunderstood him.

"Erba, didn't Zixiu tell you about the properties of a triangle with equal sides and equal angles?"

"Yeah! That's right! Brother Zixiu didn't tell Erwa, huh!" The little man snorted prettily, and proudly pulled Ning Rong's clothes to act like a spoiled child, "Master, Erwa is smart, Brother Zixiu The method is stupid, you see..."

Erwa took out a rope with several knots on it, Ning Rong's eyes lit up instantly when he looked at it.

Chapter 232 Let's go! <36 count>

Sure enough, she is a smart doll who came up with such a way!

A rope is used to measure the underground shadow. As time goes by, many sets of data can be obtained. In the end, the average value can be calculated directly by using the characteristics of an equilateral triangle.

"That's right! Erwa's method is indeed the fastest!" Ning Rong touched Erwa's little head with a smile, and praised her without hesitation, then turned to Lu Xun and asked, "Bo Yan, you won't do the same Bar?"

"Hey! The disciple is the eldest disciple of the master, so I don't pay attention to this kind of pediatric stuff!"

Lu Xun proudly pointed to the shadow under his feet, and then pointed to the shadow of the Wenhua Pavilion outside, and said with a bit of pride: "Pythagoras are multiplied by each, and they are called Xuanshi. If you remove them, you will be Xuanshi. Zhao Shuang's "Nine Chapters of Arithmetic" has already described this law, Bo Yan is not talented! I have been fortunate enough to read this book!"

"Hahaha……"

Ning Rong smiled, turned around and asked, "Feng Xiao, how about this disciple Rong?"

"Good! What a Lu Boyan! A child can be taught!" Guo Jia praised without hesitation.

"Master Cui?"

"Mr. Ning's reputation as a geek makes the enemy fearful, but he doesn't expect his disciple to be so intelligent. Drawing inferences from one instance to another is not enough to prove that this son is extremely intelligent! Great kindness!"

Ning Rong also nodded in agreement, this kid Lu Xun deserves to be a great power in the biographies of famous ministers.

"Decisive victory thousands of miles away is certainly gratifying, but it is even more gratifying to acquire talents and raise them!"

……