hitunglah volume kerucut yang memiliki: a. r= 8cm dan t= 15 cm b.r=7cm dan s= 25cm c.r=10 cm dan t= 21 cm

a. r = 8cm t = 15cm
V = 1/3 πr²t
= 1/3. 3,14 . 64 . 15
= 1.004,8cm³
b. r = 7cm
s = 25
t = √ 625 - 49
t = √ 576
= 24cm
V =  1/3 πr²t
= 1/3 . 22/7 . 49 . 24
= 1232cm³
c.  r=10 cm dan t= 21 cm
V =  1/3 πr²t
= 1/3 . 3,14 . 100 . 21
= 2.198cm³