Question

Hitunglah volume kerucut yang memiliki : a . r= 8cm dan t=15cm
b. r=7cm dan s=25cm

Answer 1

A. V= 1/3.π..t
= 1/3.3,14.8^2.15
=3,14.64.5
=1004,8 cm kubik
b. t2= s2-r2
=625-49
=576
t=24
V=1/3.22/7.7.7.24
=22.7.8
=1232 cm kubik

Answer 2

A. V.kerucut = 1/3πr²t
= 1/3 x 3,14 x 8 x 8 x 15
= 1004,8 cm³

b. t² = s² - r²
= 25² - 7²
= 625 - 49
t = √576
t. = 24 cm

V.kerucut = 1/3πr²t
= 1/3 x 22/7 x 7 x 7 x 24
= 1232 cm³