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If the area of a circle is 154 cm2, then its perimeter is

(A) 11 cm (B) 22 cm (C) 44 cm (D) 55 cm

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(A) 11 cm (B) 22 cm (C) 44 cm (D) 55 cm

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given area of circle=154

⇒area of circle=πr²

=22/7 ×7×7.

=154

so radius of the circle=7cm

perimeter of circle=2πr

=2 ×22/7×7

=44cm

⇒perimeter of the circle=44 cm.