luas alas 113 1/7cm2, panjang garis pelukis 10cm hitunglah volume kerucut

L alas = πr^2
113 1/7 = 22/7 r^2
792/7 = 22/7 r^2
r^2 = 792/7 x 7/22
r^2 = 36
r =√36 = 6

t^2 = 10^2 - 6^2
= 100 - 36
= 64
t =√64 = 8

v = 1/3 luas alas x t = 1/3 x 792/7 x 8 = 301,71