把一堆底面直径2米,高1.2米的黄沙铺进长4米,宽2米的跳远沙坑,请算出沙坑的沙厚是多少厘米?
问题描述:
把一堆底面直径2米,高1.2米的黄沙铺进长4米,宽2米的跳远沙坑,请算出沙坑的沙厚是多少厘米?
答
3.14×(
)2×1.2÷(4×2),2 2
=3.768÷8,
=0.471(米),
=47.1厘米,
答:沙坑的沙厚47.1厘米.