The curved surface area of a frustum of a cone is where and r₂ are the radii of the two ends of the frustum and is the vertical height.

Question

The curved surface area of a frustum of a cone is where and r 2 are the radii of the two ends of the frustum and is the vertical height.

Philoid · Accepted Answer

False

We know that,

Curved surface area of frustum = πl(r₁ + r₂)

Where, r₁ and r₂ are the radii of two ends (r₁ > r₂)

And l = slant height and

[ In the statement, formula for calculating slant height is incorrect]

The curved surface area of a frustum of a cone is where and r2 are the radii of the two ends of the frustum and is the vertical height.