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 circle containing smaller radius
• C. curved surface area + area of circle containing larger radius
• D. Curved surface area + area of both the circles

Answer 1

The correct option is D

Curved surface area + area of both the circles

If the figure 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 + area of both the circles).