Math, asked by GvVikram1, 1 year ago

a wire in the form of a rectangle 18.7cm long and 14.3cm wide is reshaped and bent into the form of a circle. find the radius of the circle

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Answered by yuvsingh1705

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Answered by AShantu1

length of rect =18.7cm
its breadth =14.3 cm
therefore, its perimeter=2(l+b) units
=2(18.7+14.3)cm
=2×33cm
=66cm
perimeter of rect.=circumference of circle
therefore, Circumference of circle=66cm
that means,
$2 \pi r = 66 \\ 2 \times 22 \div 7 \times r = 66 \\ r = 66 \times 7 \div (22 \times 2) \\ r = 21 \div 2 \\ r = 10.5$
therefore,radius of circle=10.5cm

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