Question

find the radius and circumference of a circle whose area is :
(1) 55.44 m. sq
(2) 186.34 cm.sq​

Answer 1

area of circle=pi ×r×r

pi=22/7.

now put the value in the required places and get the value of r(thodi calculation khud b kr lo)

now for circumference use the formula 2 × pi×r