Question

Find the volume of the cone shown as a decimal rounded to the tenth. 22m 12m

Answer 1

b

Explanation:

the volume (V) of a cone is calculated as

V =
`(1)/(3)`πr²h ( r is the radius , h is the height )

here diameter = 12 , so r = 12 ÷ 2 = 6 and h = 22 , then

V =
`(1)/(3)`π × 6² × 22

=
`(1)/(3)`π × 36 × 22

=
`(1)/(3)`π × 792 ( cancel 3 and 792 by 3 )

= π × 264

≈ 829.4 m³ ( to the nearest tenth )