Question

Question 9
(a) A piece of wire in the form of a rectangle 23cm long and
21cm broad is bent and reshaped as a circle. Find the radius
of the circle.


With reasoning

Answer 1

Answer:

44Cm is the radius of the circle.

Step-by-step explanation:

Perimeter of rectangle= 2(23cm + 21cm)

= 2 ( 44cm)

= 88cm

So, perimeter of rectangle= perimeter of circle = 88cm

Radius of circle = 88cm \2

= 44cm

Answer 2

Step-by-step explanation:

perimeter of the rectangle =perimeter of the circle

length of the rectangle =23cm

breadth of the rectangle =21cm

perimeter of the rectangle = 2(23+21)=2x44=88cm

perimeter of the circle =88cm

According to the question

2x22/7xradius=88

44/7xradius=88

radius=88x7/44=14

So radius of the circle is 14cm