Question

The slant height of the frustum of a cone is 5cm and the radii is 4cm and 1cm find the curved surface area

Answer 1

Answer:

ACCORDING TO FORMULA-

CSA of frustum shape is { pie×L (R1 + R2) }

SO,

pie×L ( r1 + r2)

we have given that --

• L = 5cm
• r1 = 4cm
• r2 = 1cm

hence,

22/7 × 5 ×( 4+1)

22/7 ×5 × 5

22×25/7

550/7