Question

Jackson 的画笔能刷出宽 $6.5$ 毫米的窄条。Jackson 的油漆足够刷出 $25$ 米长的一条。Jackson 能用油漆覆盖多少平方厘米的纸？

Jackson's paintbrush makes a narrow strip with a width of $6.5$ millimeters. Jackson has enough paint to make a strip $25$ meters long. How many square centimeters of paper could Jackson cover with paint?

$162{,}500$

$162.5$

$1{,}625$

$1{,}625{,}000$

$16{,}250$

答案：C

知识点：单位换算矩形面积

难度评级：1200

解答：

先换算成厘米。宽度为 $6.5$ 毫米 $= 0.65$ 厘米，长度为 $25$ 米 $= 2500$ 厘米。面积为 $0.65 \times 2500 = 1625$ 平方厘米。所以正确答案是 C。

Put everything in centimeters first. The strip is $6.5$ mm $= 0.65$ cm wide and $25$ m $= 2500$ cm long. Its area is $0.65 \times 2500 = 1625$ square centimeters. Therefore, the answer is C.

2023 AMC 10B 第 4 题

答案：C

难度评级：1200

解答：

其他年份的第 4 题