Lin Yuan thought to himself: "I said how can they be so confident, it turns out that they have mastered the method of angle measurement, if the angle is measured, combined with trigonometric functions, they can calculate the area of the land, this method is naturally much more accurate than the method of 'taking half of the opposite side', their calculation methods are similar to mine, they all use trigonometric functions." ”

Lin Yuan smiled and said: "It turns out that Mr. Lu also uses trigonometric functions for calculations, but it's not a secret, and trigonometric functions are also used in the next method, so there is no need to say more." ”

When Lu Fang heard this, he was immediately shocked in his heart, and thought, "How can Lin Yuan be trigonometric functions?" He must be lying to me, he may not know trigonometry! So Lu Fang smiled and said, "How can that work?" Let's ask Lord Lin to come up and explain. ”

Lin Yuan thought to himself: "What is there to talk about? The people on the scene and Xiao Dezhang on the side must not understand, and you know the Tao! So Lin Yuan said: "Let's hurry up and play, or my computer will run out of power." ”

Lu Fang frowned and asked, "What did you say?" What does 'computer' mean? ”

Lin Yuan regretted his speech, and hurriedly smiled: "It's nothing, it's nothing, let's hurry up and start the competition, how can we compare?" ”

Lu Fang said with a smile: "We have measured sixty groups of unequal fields before, but we haven't calculated how many acres there are, today we will try to calculate here, and the faster and more accurate person will win, what do you think?" ”

When Lin Yuan heard this, he thought to himself, "They won't have already calculated the result, right?" But then he thought about it: "They shouldn't be so scoundrels, after all, they are ten beating themselves!" So Lin Yuan smiled and said: "Of course you can, but there is one point, it seems difficult to judge who wins and who loses, right?" Who's faster and easier to judge depends on who finishes the math first, but who is more accurate and how to judge? The premise of judging whether it is accurate or not is that there is a benchmark, but we don't have such a benchmark at the moment. ”

Lu Fang smiled: "Lord Lin, don't worry, of course we have a way!" After Lu Fang finished speaking, he shouted at his subordinates: "Bring the things up!" I saw Lu Fang's subordinates carrying up two large boxes, Lin Yuan opened the lid of the first box and saw that it was full of yellow fine sand, those sand were very fine, Lin Yuan asked in surprise: "Where did you get such fine sand?" ”

Lu Fang smiled: "Of course, it was carefully sifted out with a sieve." Lu Fang said and opened the second box, which contained a square glass and some wooden strips of different lengths, Lin Yuan asked, "What are these?" ”

Lu Fang pointed to the wooden strips and said: "These wooden strips represent the four sides of the four unequal fields, which are reduced according to the proportion, Lord Lin knows what the proportion is, right?" Lin Yuan nodded, and Lu Fang continued: "We will arrange the wooden strips according to the shape of the land in a while, and then put the sand inside, the height of the wooden strips is fixed, so the volume of sand in this area is certain, do you understand?" ”

Lin Yuan nodded again, Lu Fang then picked up the square cup and said: "The area of this cup is already known, we put a certain volume of sand into the cup, flatten it, and then measure the height of the sand, you can find the volume of the sand, and then divide this volume by the height of the wooden strip, what we get is the area enclosed by the wooden strip, do you understand?" ”

After hearing this, Lin Yuan instantly thought: "They are transforming an amount that is not easy to measure into an amount that is easy to measure, and this basic principle has been applied a lot in modern science and technology, such as the determination of the gravitational constant, the determination of the speed of light!" This Lu Fang is really talented! ”

Lin Yuan couldn't help but praise when he thought of this: "Although there is a certain error, it is still very ingenious!" ”

When Lin Yuan was with these people, he rarely praised others sincerely, and his praise was either ironic or paved for future sarcasm, so this praise was very pleasant, and Lu Fang really felt that he was going to float up when he heard it!

Lu Fang said proudly: "Okay, let's start the competition, a total of sixty sets of questions, now send the questions." At this time, one of Lu Fang's subordinates came over, and the two pieces of paper full of numbers were sent to Lin Yuan and Lu Fang's subordinates respectively, Lin Yuan looked at the ten people and thought: "Check the trigonometric function table, and then calculate addition, subtraction, multiplication and division, how can you just use the abacus to play as fast as my computer?" Needless to say, if you are ten, even if you are twenty, I can easily win with speed. ”

Lin Yuan thought as he clicked on an area calculation program, this program was written by him last night, with this program, all Lin Yuan had to do was to input the data into it, and then click "Calculate", and the program would automatically bring the values into the pre-compiled formula, and then calculate the area data.

Lin Yuan watched the ten people scrambling to check the data, listening to the "crackling" sound of the abacus, while leisurely tapping the keyboard and entering the data, everyone in the audience saw Lin Yuan's slow appearance and discussed: "What is the square box in front of Lin Shuai?" "Didn't Lin Shuai say that it was an abacus?" "But why didn't Lin Shuai take a pen and paper to write down the calculated numbers?" "You know what? Lin Shuai has a talent for never forgetting, and he doesn't need to write down those things at all. ”

Although Lin Yuan couldn't hear everyone's discussion clearly, he could also feel their surprise, and thought to himself: "Ha Luha, laptop, this is the advantage of the traverser!" Lin Yuan entered the data while secretly cooling, and when he was halfway through the input, he suddenly heard a person on the other side say, "Lord Lu, I'm done!" ”

Lin Yuan's hands shook when he heard this, and he almost pressed the delete button to delete all the data he had entered before, he thought to himself in surprise: "Are they finished?" How can it be so fast? I can't underestimate the enemy, I have to enter the data quickly! Thinking of this, Lin Yuan couldn't help but speed up the speed of data entry, and secretly regretted that he shouldn't have taken it too long at the beginning, and wasted a lot of time!

Just when Lin Yuan entered forty sets of data, another person on the other side said, "I'm done too!" Lin Yuan's heart moved, and a piece of data was entered incorrectly, so he had to delete it and re-enter it, so he was delayed for such a while, and a few people on the opposite side said loudly: "I'm done!" ”

Lin Yuan thought to himself: "Are you going to lose?" It's really careless Jingzhou! You must not lose, if you lose, you will not only have to kowtow to Xiaodezhang to make amends, but also leave the northwest, and you must no longer meddle in land distribution affairs! Kowtowing to make amends is a small matter, leaving the northwest is a big matter! Thinking of this, Lin Yuan saw beads of sweat on his forehead, and he was nervous and typed a few data wrong.

Just as Lin Yuan entered the fifty groups, he heard Lu Fang say loudly: "Lord Lin, we have finished the calculation, you have lost!" ”

Lin Yuan only felt that his mind was blank, and then he told himself: "Don't worry, you will definitely be able to come up with a way to turn defeat into victory!" Lin Yuan had an idea, and thought: "They are calculated by hand, and they are definitely not as accurate as I am using a computer, so I will work being more accurate, and I will barely make a tie first!" ”

Lin Yuan came up with a way, and felt that his hand was much more stable, and he quickly entered all the data, clicked the calculation, and then a string of data appeared on the screen, Lin Yuan smiled: "Lord Lu, don't be in a hurry to say the winner or loser, we still have no comparison in accuracy!" ”