问题
单项选择题
The figure above shows the shape of a sign to be placed in front of a flower store. The sign has a semicircle on each side of the square. If the sign is 3 centimeters thick and if each side of the square is50 centimeters long, what is the volume, in cubic centimeters, of the sign
答案
参考答案：C
解析： 从图中可以看出，四个同样大小的半圆可构成两个直径为50厘米的整圆，所以牌子的体积可以按一个长方体外加两个圆柱体的体积进行计算：牌子的体积[*]
