Question

The height and the slant height of a cone 21 cm and 28 cm respectively find the volume of the cone

Answer 1

Answer:

Step-by-step explanation:

R=√l^2+h^2

R= √28^2+21^2

R= 35

Volume= 1/3πrh^2

= 1/3*35*21*21

= 16170 cm^2

Answer 2

Answer:

Step-by-step explanation:

hey u i will help u understand the concept

use the formula of slant height i.e. Length square=radius of base square +height square=

21 square=radius square+28 square

find the radius square and then substitute the value of radius square in the formula of volume of the cone and u will get the required answer

(don’t forget to take the square root of the radius square u get using the formula 21square=radius square+28square