Question

A wire is bent in the form of a square of side 27.5 cm. It is straightened and then bent into the shape of a circle. What is the radius of a circle so formed??

Answer 1

Answer:

the radius of a circle = 17.5cm

Step-by-step explanation:

The perimeter of the square is 4 * 27.5 = 110

Now the perimeter of square become the Circumference of the circle .

and we know that the Circumference circle = 2$\pi$r

110 = 2 * 22/7 *r

r = 110*7/2*22

r = 17.5 cm

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Answer 2

Answer:

As one side = 27.5 cm

=> Perimeter of 4 x 27.5 => 110 cm

Now, C = 2πr

=> 110 = 2πr

=> r = 110/2π = 55/π cm

Also as area = πr²

=> π(55/π)²

=>3025/π cm²

=> 962.9 cm

Step-by-step explanation:

Hope this answer will help you✌