Question

find the circumference of a circle whose : 1. radius is 35 cm 2. diameter is 42

Answer 1

1= 220 cm. 2= 132cm. are the circumferences

Answer 2

1. Radius = 35cm
Circumference of circle =
$2\pi {r}$
therefore, C=2×22/7×35
C = 220 cm

2. diameter = 42 cm
radius = 42/2 cm =21 cm
therefore by putting above formula of circumference u can get it