Staff Selection Commission Quantitative Aptitude — Question 272

Question

The area of a circle is 154 sq.cm. Find its circumference (π = 22/7)

1. 44 cm
2. 88 cm
3. 22 cm
4. 66 cm

Correct answer

A — 44 cm

Explanation (English)

Area = πr² = 154. r² = 49, r = 7. Circumference = 2πr = 44 cm

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