Question

A thin wire is in the shape of a circle of radius 77cm. It is bent into a square. Find the side of the square. (Pi=22/7)

Answer 1

radius of circle=77cm
circumference of circle=2πr
=2.22/7.77
=2.22.11
=22.22
=484cm
wire with 484cm bent into square.
so,perimeter of square=4.side
484=4.side
484/4=side
121=side
so,the side of the square is 121 cm

Answer 2

$Radius \: of \: circle \: = 77cm \\ Circumference \: of \: circle \: = 2\pi \: r \\ = 2 \times \frac{22}{7} \times 77 = 484 \\ Perimeter \: of \: square =4a \\ Perimeter \: of \: square = 484 \\ Side \: of \: the \: square \: = > 4a = 484 \\ a= 121cm$
note => a=side