题目内容
(1)下面图形的表面积

(2)求下面图形的体积

(2)求下面图形的体积
(1)3.14×4×10+3.14×(4÷2)2×2
=125.6+3.14×4×2
=125.6+25.12
=150.72平方厘米;
(2)
×3.14×(18.84÷3.14÷2)2×10
=
×3.14×32×10
=
×3.14×9×10
=94.2(立方厘米).
=125.6+3.14×4×2
=125.6+25.12
=150.72平方厘米;
(2)
| 1 |
| 3 |
=
| 1 |
| 3 |
=
| 1 |
| 3 |
=94.2(立方厘米).
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