soal diatas
jangan asal-asalan aku mau jawaban yg benar 
jangan asal-asalan aku mau jawaban yg benar
Penjelasan dengan langkah-langkah:
tt = 15 cm
tk = 28 - 15 = 13 cm
s = 15 cm
r = 8 cm
a. Luas permukaan = πr(r+2tt) + πrs
= πr(r + 2tt + s)
= π x 8 x (8 + 2x15 + 15)
= π x 8 x 53
= 424π cm²
b. Volume = πr²tt + ⅓πr²tk
= πr²(3tt + tk)/3
= π x 8² x (3x15 + 13)/3
= 64π x 61/3
= ⅓(3.904π) cm³
[answer.2.content]
