Question

find the radius of a circle whose circumference is 39.6 cm. (answer want with explanation) ​

Answer 1

Step-by-step explanation:

we know ,circumference of a circle is given by the formula =2πr

given that ,

2πr =39.6

or, r =39.6/2π

r=39.6/2 x 3.14

r = 0.63 cm

so the required radius is 0.63cm

Answer 2

Answer:

63

Step-by-step explanation:

circumference of circle = 2πr

39.6 = 2* 22/7*r

r = 396*7/2*22

r = 18*7/2

r = 126/2

r= 63 cm