Question

Tolong bantu dengan caranya ya no 33 (a & b).

Answer 1

A. V kerucut mula-mula = 1/3 . phi . r^2 . t = 27
    V kerucut sekarang = 1/3 . phi . (2r)^2 . 2t = 1/3 . phi . 4r^2 . 2t = 8 . 1/3 . phi . r^2 . t = 8 . 27 = 216

b. V kerucut mula-mula = 1/3 . phi . r^2 . t = 240
    V kerucut sekarang = 1/3 . phi . (3r)^2 . 1/3t = 1/3 . phi . 9r^2 . 1/3t = 3 . 1/3 . phi . r^2 . t = 3 . 240 = 720