✨ Best Answer ✨
◉円錐の側面積
【公式】母線×半径×π
5×3×π＝15π
◉円柱の側面積
側面+底面
6π×6+9π＝45π
15π+45π＝60π㎠
◉体積
円柱−円錐
9π×6−9π×4×1/3＝54π-12π
＝42π㎤
だと思います！
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