Multiple choice

The circumference of a circle is $44 cm$. Then the area of circle is:

  1. $276cm^{2}$
  2. $44cm^{2}$
  3. $176cm^{2}$
  4. $154cm^{2}$
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D Correct answer
Explanation

Circumference = 2*pi*r = 44. r = 44 / (2 * 22/7) = 7. Area = pi*r^2 = (22/7) * 7 * 7 = 154.

AI explanation

The circumference formula 2 times pi times radius equals 44 gives the radius as 44 divided by the product of 2 and 22 divided by 7, which is 7 cm. The area of a circle is pi times radius squared, so 22 divided by 7 times 7 squared gives 154 cm squared.

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