✨ Best Answer ✨
(1)円周の長さ＝直径×円周率
求める長さをrとおくと、2πr＝４π+16π ∴r＝10
(2)円の面積＝半径×半径×円周率
求める長さを…上と同じようにやってみてください笑
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✨ Best Answer ✨
(1)円周の長さ＝直径×円周率
求める長さをrとおくと、2πr＝４π+16π ∴r＝10
(2)円の面積＝半径×半径×円周率
求める長さを…上と同じようにやってみてください笑
Users viewing this question
are also looking at these questions 😉
