Multiple choice

Find the value of the radius of a sphere whose surface area is 36π sq.units

  1. 3

  2. 4

  3. 5

  4. 6
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A Correct answer
Explanation

The surface area of a sphere is 4 * pi * r^2. Given 4 * pi * r^2 = 36 * pi, we have r^2 = 9, so r = 3.

AI explanation

Using the surface area formula for a sphere, 4 times pi times radius squared equals 36 times pi. Dividing both sides by pi gives 4 times radius squared equals 36, and dividing by 4 gives radius squared equals 9. Taking the square root of both sides gives a radius of 3 units. The result is 3.

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