Multiple choice

Lateral surface area of the frustum of a cone is

  1. $\pi (r_2 - r_1) h$
  2. $\pi (r_1 + r_2) h$
  3. $\pi (r_1 - r_2) l$
  4. $\pi (r_1 + r_2) l$
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D Correct answer
Explanation

The lateral surface area of a frustum of a cone is given by the formula pi * (r1 + r2) * l, where r1 and r2 are the radii of the two bases and l is the slant height.

AI explanation

The lateral surface area of a frustum of a cone is determined using the formula pi times the sum of r one and r two multiplied by l, where l is the slant height. Therefore, the correct formula is pi (r one + r two) l.

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