Question

A cylinder has diameter of 10 cm and a height of 20 cm what is the volume of the cylinder

Answer 1

Explanation:

Surface Area of circle on top of cylinder:

= πr²

= π(d÷2)²

= π(10÷2)²

= π(5)²

= 25π

Volume of Cylinder:

= 25π × h

= 25π × 20

= 500π

= 1570.8 cm³ (to 1 decimal place)

Answer 2

V = 1570.796327 cm^3

Explanation:

V= pi *r^2h

diameter = 2 * radius

10 = 2r

r = 5

substitute in what we know

V = pi *( 5^2) * 20

V = pi * 25 * 20

V = pi *500

V = 1570.796327 cm^3