Question

The circumference of a circle is 440 cm. Find its radius and diameter pier = 22/7

Answer 1

440=2*22/7*r
440*7=44*r
3080=44r
3080/44=r
divide it and what is answer is its radius

Answer 2

$2\pi \times r$
is the circumference of circle = 440
2 *2/27 *r =440
r=440*7/2*22
=70 and diameter=2r =2*70=140