Question

A wire is in the form of a rectangle of sides 18cm and 10cm. It is bent to

make a circle. Find the radius of circle​

Answer 1

Answer:

Given;-

Rectangle l = 18cm, b = 10cm

so, its perimeter = 2( l + b ) => 2 ( 18 + 10) => 2 × 28 = 56cm

So the perimeter of rectangle must be equal to satisfy the circumference of circle = 2πr

56 = 2πr

28 = πr => 28 = 22/7 × r

28 × 7 /22 = r

8.91 cm = r

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