母線の長さが17、底面の半径が15なので
側面積は、17×15×π
底面積は、15×15×π
2本の式を合体して、
(17+15)×15×π
＝ 32×15×π
＝ 480π
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母線の長さが17、底面の半径が15なので
側面積は、17×15×π
底面積は、15×15×π
2本の式を合体して、
(17+15)×15×π
＝ 32×15×π
＝ 480π
Users viewing this question
are also looking at these questions 😉
