Multiple choice

The CSA of a right circular cylinder whose radius is 7 cm and height 20 cm is

  1. 800sq.cm

  2. 400sq.cm

  3. 880sq.cm

  4. none
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Curved Surface Area (CSA) of a cylinder = 2 * pi * r * h = 2 * (22/7) * 7 * 20 = 2 * 22 * 20 = 880 sq.cm.

AI explanation

Using the curved surface area formula for a right circular cylinder, which is 2 times pi times radius times height, we substitute the given values. With a radius of 7 cm and a height of 20 cm, the formula becomes 2 times 22/7 times 7 times 20. The 7 in the numerator and denominator cancel out, leaving 44 times 20, which is 880. The result is 880sq.cm.

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