keliling alas sebuah kerucut 88cm.jika tinggi kerucut =24cm maka volume krucut,

keliling= 2phi×r
88. =2×3,14×r
88. =6,28×r
r=88:6,28=14
Vkerucut=1/3 phi ×r×r ×t
1/3×22/7×14×14×24=4928cm kubik

Dik :
Ka = 88 cm
t = 24 cm

Dit :
v = ...?

Penye :
Ka = 2 . phi . r
88 = 2 . 22/7 . r
88 = 44/7 . r
r = 88 . 7/44
r = 2 . 7
r = 14 cm

v = 1/3 . phi . r*2 . t
v = 1/3 . 22/7 . 14*2 . 24
v = 1/3 . 22/7 . 196 . 24
v = 4928 cm*3