1.
(1)C
(2)A
(3)C
(4)C
2.
图一
1/3x3.14x2x6
=1/3x3.14x4x6
=25.12(立方厘米)
图二
6÷2=3(厘米)
1/3x3.14x3x9
=1/3x3.14x9x9
=84.78(立方厘米)
3: 1/3x3.14x4x9
=1/3x3.14x16x9
=150.72立方厘米
=150.72毫升
答:会有150.72毫升的水溢出桶外。
4. 3.14x1.5x5x1
=3.14x2.25x5x1
=35.325(千克)
答:能盛水35.325千克。
5. 6÷2=3(厘米)
1/3x3.14x3x10x8.9
= 1/3x3.14x9x10x8.9
=838.38(克)
答:这个铜锥重838.38克。
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