Question

In order to paint a solid frustum, which area would be taken into consideration?

• A. Curved surface area
• B. Curved surface area + area of the smaller circle.
• C. curved surface area + area of the larger circle.
• D. Curved surface area + area of both the circular ends.

Answer 1

The correct option is D

Curved surface area + area of both the circular ends.

If the object is solid, then all the surfaces have to be painted. It consists of no hollow faces.

Therefore the area to be painted is,
curved surface area of frustum + area of both the circular ends.