题目内容
一个圆锥形麦堆,底面半径是2米,高是1.5米,如果把这些小麦装入一个圆柱形粮囤里,只占粮囤容积的
.已知粮囤底面积是9平方米,粮囤的高是多少米?
4 |
9 |
(3.14×22×1.5×
)÷
÷9
=(3.14×4×1.5×
)÷
÷9,
=(12.56×1.5×
)÷
÷9,
=(18.84×
)÷
÷9,
=6.28÷
÷9,
=14.13÷9,
=1.57(米);
答:这里粮囤的高是1.57米.
1 |
3 |
4 |
9 |
=(3.14×4×1.5×
1 |
3 |
4 |
9 |
=(12.56×1.5×
1 |
3 |
4 |
9 |
=(18.84×
1 |
3 |
4 |
9 |
=6.28÷
4 |
9 |
=14.13÷9,
=1.57(米);
答:这里粮囤的高是1.57米.
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