a wire is in the form of a square of side 27.5cm .it is strainghtened and bent into the shape of a circle .find the area of the circle
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length of wire=4×side
=4×27.5 cm
=110 cm
circumference of circle=2×pie×r
=110 cm=2×22/7×r
r =110×7/22× 1/2 cm
r= 35/2 cm.
area of circle=pie×r ^2
=22/7× 35/2× 35/2 cm ^2
=962.5 cm ^2
=4×27.5 cm
=110 cm
circumference of circle=2×pie×r
=110 cm=2×22/7×r
r =110×7/22× 1/2 cm
r= 35/2 cm.
area of circle=pie×r ^2
=22/7× 35/2× 35/2 cm ^2
=962.5 cm ^2
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