Multiple choice

Find the circumference of the circle whose area is 452.57 cm2.(Approx)

  1. 67.5 cm

  2. 70 cm

  3. 85 cm

  4. 75.5 cm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Area of circle = πr² = 452.57 cm². So r² = 452.57/π ≈ 144, giving r ≈ 12 cm. Circumference = 2πr ≈ 2 × 3.14 × 12 = 75.36 cm. The closest option is 75.5 cm. Using π ≈ 3.14: r = √(452.57/3.14) ≈ 12.001 cm, C ≈ 75.4 cm.

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