Multiple choice

If the volume of a cylinder is 2156 cubic cm and height is 14 cm, find its radius?

  1. 14 cm

  2. 21 cm

  3. 3.5 cm

  4. 7 cm
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D Correct answer
Explanation

Volume of a cylinder = pi * r^2 * h. Given 2156 = (22/7) * r^2 * 14. Simplifying, 2156 = 44 * r^2, so r^2 = 49, which means r = 7 cm.

AI explanation

Using the cylinder volume formula V equals pi times r squared times h, we have 2156 equals 22/7 times r squared times 14. This simplifies to 2156 equals 44 times r squared. Dividing 2156 by 44 gives r squared equal to 49, so the radius r is 7 cm.

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