Multiple choice

The curved surface area of a right circular cylinder is 60πcm2 and radius of its base is 3 cm ,then find the product of area of base and height of the cylinder?

  1. 60π

  2. 72π

  3. 90π

  4. 81π
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Curved surface area of cylinder = 2πrh = 60π, with r = 3 cm. Therefore 2π × 3 × h = 60π, giving h = 10 cm. Area of base = πr² = π × 9 = 9π. Product of base area and height = 9π × 10 = 90π.

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