Multiple choice

The circumference of a circle is 66 cm. what is its area?

  1. 346.5 cm2.

  2. 360.5 cm2.

  3. 320.5 cm2.

  4. 340.5 cm2.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using C = 2πr, we find radius r = 66/(2π) = 66/(2×22/7) = (66×7)/(44) = 10.5 cm. Then area A = πr² = (22/7) × (10.5)² = (22/7) × 110.25 = 346.5 cm². This demonstrates the relationship between circumference and area.

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