Question

!Please Help !
Find the volume of this cylinder

Answer 1

using 3 for pi it's V = 960cm^3

Explanation:

R is the radius, which as stated, is half the diameter.

r = 8cm / 2 = 4cm

H is the height, which is shown to be 20cm

h = 20cm

V = pi*r^2*h

V = pi*(4cm)^2*20cm

substituting 3 for pi as requested.

V = 3*(4cm)^2*20cm - 3 * (16cm^2) * 20cm = 48cm^2 * 20cm = 960cm^3

Answer 2

volume of cylinder= pie × radius square× height

= 22/7×4×20

=1760/7

=251.42cm