Using π = 22/7, what is the area of a circle with a radius of 7 cm?

Correct answer: D. 154 cm²

Area = πr² = 22/7 × 7 × 7 = 22 × 7 = 154 cm². With r = 7, one 7 cancels the denominator, which is why exam items often use radii that are multiples of 7.

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Answer and explanation

The correct answer is D. 154 cm²

Area = πr² = 22/7 × 7 × 7 = 22 × 7 = 154 cm². With r = 7, one 7 cancels the denominator, which is why exam items often use radii that are multiples of 7.

Topic: Measurement, Geometry and Money MCQs · Subject: Numerical Ability