Question

a wire in the form of a rectangle 20 cm long and 17.4 cm wide is reshaped and bent into the form of a circle. find the radius of the circle. Answer is 11.9​

Answer 1

Given:

Lenth of the rectangle is 20cm and breadh is of 17.4cm. Now this rectanular wire is reshaped by benting in the form of a circle.

To find:

Find the radius of the circle.

Solution:

As the rectangular wire is reshaped into the form of a circle, so the perimeter of the rectangle will be equal to the circumference of the circle.

Therefore, the circumference of the circle $=2(20+17.4)=74.8$cm

Now, the circumference of the circle $=2\pi r=74.8$

or, $r=\frac{74.8}{2\pi}$ $=11.904$cm

Therefore, the radius of the circle is 11.904cm.

Answer 2

Answer:

How 74.8/2pi how we do this sum