Find the area of a quadrant of a circle whose circumference is 2.2cm.
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Circumference = 2πr = 2.2cm
2 ×22/7 × r = 22/10
r = 7/20
Area of quadrant = πr^2/4
= 22/7 × 7/20 × 7/20 × 1/4
= 22×7×7/7×20×20×4
= 77/800
= 0.09 cm^2
2 ×22/7 × r = 22/10
r = 7/20
Area of quadrant = πr^2/4
= 22/7 × 7/20 × 7/20 × 1/4
= 22×7×7/7×20×20×4
= 77/800
= 0.09 cm^2
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