Question

if the slant height of the frustum of a cone is 20cm and the radii of its circular base are 20 cm and 8 cm respectively,find the volume of frustrum

Answer 1

it's very easy brother !

we know,

Radius of the upper end of the frustum of cone = R = 20 cm

radius of the lower end of the frustum of cone = r = 8cm

l =20cm

Volume = 1/3πh[R² + r² + R*r]

Slant height (l)= 20cm

radius= 20cm+8cm=28cm

height = √ l² - r²

put these formulas! and your answer will be there !!

Answer 2

Step-by-step explanation:

here I have every little thing