if area of a circle is 168 cm square.find it's circumferemce
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area of circle = πr^2 = 168
22/7×r^2 = 168
r^2 = 168×7/22
r ^2= 7.63×7
r= √53.41
r = 7.308 cm
circumference of circle = 2πr
2×22/7×7.308
63.36 cm
22/7×r^2 = 168
r^2 = 168×7/22
r ^2= 7.63×7
r= √53.41
r = 7.308 cm
circumference of circle = 2πr
2×22/7×7.308
63.36 cm
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