Question

一个正方形的周长是另一个正方形周长的 $3$ 倍。较大正方形的面积是较小正方形面积的多少倍？

The perimeter of one square is $3$ times the perimeter of another square. The area of the larger square is how many times the area of the smaller square?

$2$

$3$

$4$

$6$

$9$

答案：E

知识点：相似面积比

难度评级：820

解答：

正方形的周长与边长成正比，所以较大正方形的边长是较小正方形的 $3$ 倍。

面积等于边长的平方，所以较大面积是较小面积的 $3^2 = 9$ 倍。

所以正确答案是 E。

A square's perimeter is proportional to its side, so the larger square has side length $3$ times the smaller one.

Area is the side squared, so the larger area is $3^2 = 9$ times the smaller.

Thus, the correct answer is E .

1994 AMC 8 第 16 题

答案：E

难度评级：820

解答：

其他年份的第 16 题