Question

NEED HELP ASAP PLEASE


A cylinder has a height of 21 cm.
The diameter of the cylinder is 4/7 it’s height
Calculate the volume of the cylinder in terms of Pi

Answer 1

volume of cylinder : 756π

• height : 21 cm

• diameter : (4/7 * 21) = 12 cm

• radius : d/2 = 12/2 = 6 cm

find volume:

$\sf volume \ of \ cylinder : \pi r^2h$

$\sf \hookrightarrow \pi (6)^2(21)$

$\sf \hookrightarrow \pi (36)(21)$

$\sf \hookrightarrow 756\pi$

Answer 2

Diameter:-

• 4/7(21)=4(3)=12cm
• Radius=r=6cm
• Height=h=21cm

Now

Volume:-

• πr²h
• (3.14)(6)²(21)
• 65.94(36)
• 2373.84cm^3