keliling alas kerucut 88cm ,tinggi 24 cm dan π = 22/7 , tentukan volume kerucut

keliling=88
keliling= phi x d
88 cm=22/7 x d
88 x 7/22= d 
28=d
r=14

volume=
1/3 x phi x r x r x t
1/3 x 22/7 x 14 x 14 x 24
4928 cm kubik

Keliling alas
= 2πr = 88 cm
2. 22/7.r = 88
44/7. r = 88
r = 88 x 7 /44
r = 14 cm
V. kerucut = 1/3 .Luas alas x tinggi
=1/3 πr² x t
= 1/3. 22/7. 14² . 24
= 1/3. 22/7. 14.14.24
= 1/3. 22. 2. 14.24
= 1/3 . 14784
= 4828 cm³