Question

A square of sides 11cm and a circle have the same perimeter. Calculate the radius of the circle. (=22/7)

Answer 1

Answer :-

The Perimeter of Square = The Perimeter of Circle.

Let the radius be R cm.

The perimeter(circumference) of the circle = 2 π R

The perimeter of the square = 4 A

So,

=> 4 × A = 2 π R

=> 4×11 = 2 × 22/7 × R

=> 44 ×7/44 = R

=> R = 7cm

Answer 2

Step-by-step explanation:

• circumference means length of border of circle. and also perimeter is known as length of border of any figure.
• perimeter = circumference.
• In given que. Peri. of squer = peri. of circle
• so in given example circumference of circle is 11cm
• formula of circumference of circle = 2πr
• so ,11 = 2× 22/7 × r
• 11×7 / 22×2
• 77/44
• 7/4 = 1.7 (approx)
• therefore 1.7cm is the radius of the circle