How to find radius of a circle whose area is 1386cm
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area = πr^2 = 1386
22/7×r^2 = 1386
r^2 = 1386 ×7/22
r^2 = 63×7
r= √441
r = 21
22/7×r^2 = 1386
r^2 = 1386 ×7/22
r^2 = 63×7
r= √441
r = 21
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