Question

A circle and rectangle have the same perimeter the side of a rectangle are 18 cm and 26 cm what is the radius of the circle

Answer 1

Answer:

Given,

P(rectangle)=P(circle)

We know that

P (rectangle)=2(l+b)

where

l=length=26cm

b=breadth=18cm

P(circle)=2πr

Therefore

substituting values in the starting equation,

2(l+b)=2πr

l+b=πr

44=πr. (Taking π=22/7)

r=44×7/22

r=14cm

therefore the circle has a radius of 14cm.

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Answer 2

Answer:

given that:

perimeter of circle =perimeter of rectangle

perimeter of rectangle=2(length + breadth)

=2(18+26)

=88cm

perimeter of circle=2πr

88cm =2 * 22/7*r

88/2 *7/22=r

14cm=r

Step-by-step explanation:

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