Find the area of a quadrant of a circle whose circumference is 22 cm.
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Step-by-step explanation:
circumference = 2πr
22 = 2πr
11 = 22/7 × r
r = 3.5 cm
Area = πr^2
= 22/7 × 3.5 × 3.5
= 22× 0.5 × 3.5
= 11× 3.5
= 38.5 sq cm
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