Multiple choice

If the radius of a sphere is $2\ cm$, then the curved surface area of the sphere is equal to

  1. $8\pi \ cm^{2}$
  2. $16 \ cm^{2}$
  3. $12\pi \ cm^{2}$
  4. $16\pi \ cm^{2}$
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D Correct answer
Explanation

Curved surface area of a sphere = 4 * pi * r^2. With r = 2, area = 4 * pi * (2^2) = 16 * pi.

AI explanation

The formula for the curved surface area of a sphere is four times pi times the square of the radius. Substituting the given radius of 2 cm into the formula yields four times pi times 2 squared. This calculates to 16 pi square cm.

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