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Find the circumference of a circle whose area is 1386 cm.
(A) 132 cm2 (B) 132 cm
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Answer:
Area =1386cm s
arer=πr sq.
1386cm sq. =22/7 x r sq.
r sq. = 1386 x 7/22
r sq. =√63
r =3x3x7
r =63
circumference =2πr
=2 x22/7 x63
=396 cm
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