Multiple choice

The inner diameter of a circular well is $3.5m$. It is $10m$ deep and area of the playground is $1584{m}^{2}$ Find its inner curved surface area,

  1. $110{m}^{2}$
  2. $210{m}^{2}$
  3. $140{m}^{2}$
  4. $250{m}^{2}$
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A Correct answer
Explanation

Inner curved surface area = 2 * pi * r * h. Diameter = 3.5 m, so r = 1.75 m. CSA = 2 * (22/7) * 1.75 * 10 = 2 * 22 * 0.25 * 10 = 110 m^2.

AI explanation

The inner curved surface area of a cylinder is found using the formula 2 times pi times r times h. Given an inner diameter of 3.5 m, the radius r is 1.75 m, and the depth h is 10 m. Substituting these values gives 2 times 22 divided by 7 times 1.75 times 10, which equals 110 m squared.

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