A frustum has top radius 4 cm, bottom radius 10 cm and slant height 10 cm. It is to be covered with metal sheet on its curved surface and the bottom circle only (top is open). Find the total area of sheet, in cm^2 (use π = 3.14).

Question

Accepted Answer

753.6. Curved = π*l*(R + r) = 3.14*10*14 = 439.6. Bottom (R = 10) = π*R^2 = 3.14*100 = 314. Total = 439.6 + 314 = 753.6 cm^2.

A frustum has top radius 4 cm, bottom radius 10 cm and slant height 10 cm.
It is to be covered with metal sheet on its curved surface and the bottom circle only (top is open). Find the total area of sheet, in $cm^{2}$ (use π = 3.14).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Frustum of a Cone practice

A frustum has top radius 4 cm, bottom radius 10 cm and slant height 10 cm.It is to be covered with metal sheet on its curved surface and the bottom circle only (top is open). Find the total area of sheet, in cm2 (use π = 3.14).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Frustum of a Cone practice

A frustum has top radius 4 cm, bottom radius 10 cm and slant height 10 cm.
It is to be covered with metal sheet on its curved surface and the bottom circle only (top is open). Find the total area of sheet, in $cm^{2}$ (use π = 3.14).