Multiple choice

The diameter of a circle is $28 :cm$. Find its area.

  1. $616 \: cm^{2}$
  2. $516 \: cm^{2}$
  3. $116 \: cm^{2}$
  4. $216 \: cm^{2}$
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A Correct answer
Explanation

The radius r is half the diameter, so r = 14 cm. The area of a circle is pi * r^2. Using 22/7 for pi, the area is (22/7) * 14 * 14 = 22 * 2 * 14 = 616 cm^2.

AI explanation

Using the given diameter of 28 cm, the radius is 14 cm. Applying the area of a circle formula, Area = pi times r squared, we calculate 22/7 times 14 times 14. This results in 616 square cm.

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