Ques...The area of a circle is 1386sq. cm Find its diameter and circumference.
Plzz tell the answer with full explanation... Plzzz mates...
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πr^2=1386
22/7×r^2=1386
22×r^2=1386×7
22 × r^2 = 9702
r^2=441
r=√441
r=21cm
Diameter = 2×radius
Diameter= 2×21
Diameter= 42cm
Circumference=2πr
2×22/7×21
132 cm
Hence Circumference = 132 cm
Diameter= 42 cm
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