Question

9. A piece of wire is bent to form a square of area 121 cm². The same piece of wire is bent to form a circle. Find area of the circle.

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Answer 1

Answer:The radius of circle is 7 unit and The area of circle is 154 sq.unit

Step-by-step explanation:Area of square = side ^2

We are given that Area of square is 121 sq.unit.

So, Side^2 = 121

Side =  11

Perimeter of square = 4*side=4*11=44

Circumference of circle = 2pier

a piece of wire is bent to form a square of area (121)square ;the same piece of wire is bent to form a circle

So,  2pier=44

r=44*7/22*2

Area of circle = piersquare

Hence The radius of circle is 7 unit and The area of circle is 154 sq.unit

Answer 2

Answer:

area of circle=154cm^2