Multiple choice

The diameter of the base of cone is $10\ cm$ and its slant height is $17\ cm$. Then the curved surface area of the cone is ____$cm^{2}$.

  1. $85\pi$
  2. $170\pi$
  3. $95\pi$
  4. $88\pi$
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A Correct answer
Explanation

Curved surface area of a cone = pi * r * l. Given diameter = 10, radius r = 5. Given slant height l = 17. Area = pi * 5 * 17 = 85 pi.

AI explanation

Given a diameter of 10 cm, the radius of the cone is 5 cm. Using the curved surface area formula for a cone, pi * r * l, we substitute the radius and the given slant height of 17 cm. Multiplying these values gives 85 * pi square cm.

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