Question

一个圆锥形麦堆的底面周长12.56 米,2 米,如果每立方米小麦重500千克.这堆小麦重多少吨?

Answer 1

=> 半径 = 12.56 /2pi = 2 m

=> 底面积 = 2^2 * pi = 12.57 m

=> 体积 = 12.57 * 1.2 / 3 = 5 m^3

=> 重 500 * 5 = 2500 kg = 2.5 t