Time passed quickly. Almost in the blink of an eye, the whole morning had passed.

At noon, Qin Luo, Wang Xuecai and others chose a fast food restaurant near Princeton.

As for cheap brother Luo Yang? He loves to go where, anyway, never appear in front of himself.

"What are you eating, teacher?" After looking at the menu, Qin Luo turned to Wang Xuecai.

In fact, to be honest, there is nothing delicious here.

Besides fried chicken, pizza, cheese, and dessert, there are not many choices.

"Whatever you want." Wang Xuecai then said.

This western fast food is no different from wood in his mouth.

"Let's have a nine inch pizza?"

"Yes!"

"Whatever I want."

"OK..."

With the consent of many old professors and a group of doctoral students, Qin Luo recruited a waiter and said to him, "a 9-inch pizza. "

" OK, just a moment, sir. "The waiter smiles at the torpedo warhead and turns to the kitchen.

Soon the waiter appeared in front of Qin Luo again. He looked at Qin Luo apologetically and said, "I'm sorry, sir. The 9-inch pizza you asked for is not available. In order to apologize, we'll replace you with two five inch pizzas, and we'll give you an extra inch. Is that ok

If you were someone else, you might have agreed to it now, but Qin Luo was still on the edge of his mouth. At this moment, he had a new understanding of the mathematics level of the American people.

"Wait a minute. I'll give you some science to calculate the area of a circle. 9 inches = 63.585 square centimeters, while 5 inches = 19.625 square centimeters, 2 * 5 inches = 39.25 square centimeters, 3 * 5 inches = 58.875 square centimeters, which means that even if you compensate for three 5-inch pizzas, it's not enough for a 9-inch pizza." Qin Luo said with a pure American accent.

“…… Are you kidding, sir? How can three five inch pizzas not compare to one nine inch The waiter said with a smile.

"It happens that Princeton is next door. If you don't believe it, you can ask Princeton's top students." Qin Luo shrugged his shoulders and said with a smile, "of course, even if you ask, you will get the same result, because there will always be only one mathematical answer."

The waiter hesitated for a moment, turned away from the restaurant and headed straight for Princeton.

A few minutes later, the voice of the waiter reappeared in the middle of Qin Luo's career, and beside him stood a blonde with hot body and blue eyes.

"Fiona, help me figure it out. Three 5-inch pizzas, is there a 9-inch pizza?" Said the waiter.

As a high-quality student in Princeton and a member of the Mathematics Research Association, Fiona has a deep attainments in mathematics. Even in Princeton, where there are so many experts, he can rank the top.

"Parker, what kind of pizza?"

"It's like this..." Qin Luo took over the argument and simply described the cause and effect of the matter.

"That's right, that's it. The gentleman said that three yuan and five inch pizzas are not as good as one piece of nine inch pizzas. How could this be possible?" The waiter named Parker said confidently.

In his impression, he stubbornly thought that 15 inch was bigger than 9 inch!