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A round brass plate has a diameter of 63 cm. What is the area of its face in $cm^{2}$ ? (Take π = 22/7.)

Competition practiceMensuration

A3118.5
B198
C12474
D6237

Step-by-Step Solution

Radius = 63 ÷ 2 = 31.5 cm. Area = π

r^{2} = 22/7 \times 31.5 \times 31.5 = 22 \times 4.5 \times 31.5 = 3118.5 cm^{2}

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Answer: A) 3118.5

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