The area of a circle is 38.5 cm^2 . Find its radius (in cm ). - Quantitative Aptitude MCQ Competitive Exam 2026 | ExamTest.live

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The area of a circle is 38.5 cm^{2} . Find its radius (in cm).

Solution & Step-by-step Explanation

The area of a circle is given by A = π r^{2} . 38.5 = \frac{22}{7} \times r^{2} r^{2} = \frac{38.5 \times 7}{22} r^{2} = \frac{269.5}{22} = 12.25 r = 12.25 = 3.5 cm

Try it yourself before checking the explanation above.

The area of a circle is 38.5 cm^{2} . Find its radius (in cm).

7

6.5

3.5

13

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