⑴ | ⑵ | ⑶ | ⑷ |
C | A | C | C |
图一 |
体积=1/3x3.14x2²x6
=1/3x3.14x4x6
=25.12
|
图二 |
半径=6÷2=3
体积=1/3x3.14x3²x9
=1/3x3.14x9x9
=84.78
|