Multiple choice

A right circular cylinder is 3m high and the circumference of its base is 22m. Find its curved surface area.

  1. 65 m2

  2. 64 m2

  3. 63 m2

  4. 66 m2
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D Correct answer
Explanation

Circumference = 2 * pi * r = 22. r = 22 / (2 * 22/7) = 3.5. Curved surface area = 2 * pi * r * h = 22 * 3 = 66.

AI explanation

The curved surface area of a right circular cylinder is found using the formula base circumference multiplied by height. Substituting the given height of 3 m and the given base circumference of 22 m into the formula yields 22 * 3. This calculation gives a curved surface area of 66 square meters.

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