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練習問題 2.1 の解答
- 球の表面積
(define surface-of-sphere (lambda (r) (* 4 pi r r)))
- 球の体積
(define volume-of-sphere (lambda (r) (/ (* 4 pi r r r) 3)))
- 円柱の表面積
(define surface-of-cylinder (lambda (r h) (* 2 pi r (+ r h))))