Question

7. A square shaped wire is opened out and made into a circle of area 616 cm”. Find the radius
of the circle and its circumference. Also find the side of the original square.​

Answer 1

Step-by-step explanation:

perimeter of wire = 6 a

area of circle = πr² =616cm

=>r²= 616/π

=>r² = 196

=> r = √196 = 14

=> r = 14 cm

circumference = 2πr = 2π (14)

= 88 cm

According to question,

=> perimeter of circle = area of circle

=> 6a = π r²

=> a = π r²/6

=> a = 308/3

so side of square is 308/3 cm