Question

Find the circumference of a circle whose radius is : (a) 2.1 cm (b) 9.1 m (c) 20.3 cm​

Answer 1

Answer:

a)13.2 cm

b)57.2 m

c)127.6 cm

Step-by-step explanation:

circumference of a circle=2πr

Therefore,

circumference of a circle whose radius is:-

a)2.1 cm=2π×2.1cm

=13.2 cm

b)9.1m=2π×9.1 m

=57.2m

c)20.3cm=2π×20.3cm

=127.6m