a wire is in the shape of a rectangle of length 36cm and width 30cm it is reshaped and bent in the form of a circle find the radius of the circle. solve the questions
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length = 36 cm
breadth = 30 cm
perimeter = 2(length + breadth)
=2(36 + 30)
= 2 × 66
= 132 cm
let the radius of the circle be r.
so the circumference of the circle =132 cm
2πr = 132 cm
2 × 22/7 × r = 132 cm
r/7 = 3 cm
r = 21 cm
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ANSWER:The length of wire
=Perimeter of rectangle
=2×(36+30)cm
=2×66cm
=132cm.
The circumference of the circle made by the wire will be equal to the perimeter of the rectangle.
2πr=132cm
or r=132×7/2×22cm=21cm.
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