Question

the circumference of a circle is equal to the perimeter of a square if area of the square is 484 CM square then find area of the circle

Answer 1

so square root of 484 is 22x4 which is 88 so the circumference of a circle is 88 cm. The circumference is pi x d or pi x 2r so 2r + 3.14(about) is 88 so:

2r = 85(about) so r is equal to 42.5

so the area is 42.5 x 3.14(about pi) which is 133.45