Multiple choice

The diameter of a circle is $28 cm$. Find the o ne-fourth of its area.

  1. $389 cm^{2}$
  2. $512 cm^{2}$
  3. $616 cm^{2}$
  4. $154 cm^{2}$
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D Correct answer
Explanation

Diameter = 28, so radius = 14. Area = pi * r^2 = (22/7) * 14 * 14 = 22 * 2 * 14 = 616. One-fourth of the area = 616 / 4 = 154.

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, which gives 616 square cm. One-fourth of this area is 616 divided by 4, resulting in 154 square cm.

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