Question

A wire if the shape of circle of radius 21 cm is bent into the square determine the side of a square

Answer 1

Answer:

33 cm

Step-by-step explanation:

circumference=2πr

=2×$\frac{22}{7} * 21\\= 2 * 22 * 3\\=132$ cm

so, perimeter of square = 132 cm

thus, side of square = $\frac{132}{4} \\=33$ cm

Answer 2

Radius of Circle=21 cm

Perimeter or Circumference of Circular wire.

=2πr

$2 \times \frac{22}{\cancel7} \times \cancel{21} \\ \\ 2 \times 22 \times 3 \\ \\ = 132 \: cm$

Perimeter=132 cm

Now If Circular or Any Shape will change into Any Shape the length of boundary or Perimeter will same .

It change into Square shape.

Perimeter=132 cm

Square Perimeter=4×side

4×side=132

side=132/4

Side=33 cm

$\boxed{\mathbf{Side=33\:cm}}$