Multiple choice

Find the area of circle whose circumference is $220cm$

  1. 3850

  2. 3500

  3. 3700

  4. 3900
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A Correct answer
Explanation

Circumference = 2 * pi * r = 220. r = 220 / (2 * 22/7) = 35. Area = pi * r^2 = (22/7) * 35 * 35 = 22 * 5 * 35 = 3850.

AI explanation

Using the circumference formula, 2 times pi times r equals 220, making the radius 35 cm. Applying the area of a circle formula, Area = pi times r squared, we get 22/7 times 35 times 35. This calculates to 3850.

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