题目内容
求出下面图形的表面积.

3.14×(
)2×2+3.14×8×12,
=3.14×16×2+301.44,
=100.48+301.44,
=401.92(平方厘米),
3.14×(1.2÷2)2×2+3.14×1.2×0.8,
=3.14×0.36×2+3.0144,
=2.2608+3.0144,
=5.2752(平方厘米).
| 8 |
| 2 |
=3.14×16×2+301.44,
=100.48+301.44,
=401.92(平方厘米),
3.14×(1.2÷2)2×2+3.14×1.2×0.8,
=3.14×0.36×2+3.0144,
=2.2608+3.0144,
=5.2752(平方厘米).
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