Question

find the circumference of a circle when it's area is 36πcm2

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Answer 1

GIVEN,

Area of a circle=36pi cm^2

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TO FIND,

circumference of a circle

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SOLUTION,

Area of circle =pi r^2

=>36 pi cm^2=pi r^2

or, 36cm^2=r^2( cancell pi both side)

or, root under 36cm^2=r

or, r=6 cm

then,

circumference of circle =2pi r

=2*22/7*6

=264/7 cm

or, 37.7142857 cm

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