Question

Volume kerucut 4.312 cm3 tinggi 21cm dan n=22/7 jari2 alas nya adalah...

Answer 1

V = 1/3 r²t
4.312 = 1/3*22/7*r²21
4.312 = 22*r²
r² = 4312/22
r² = 196
r = 13

Answer 2

Volume kerucut = 1/3 x nr2 x t
4312 = 1/3 x 22/7 (r2) x 21
4312 = 22 x r2 v
Maka r2 = 4312 / 22 = 196
r = akar dari 196
= 14 cm