Question

Find the circumference of the wheel of Anchal's cycle whose diameter is 21 cm​

Answer 1

Step-by-step explanation:

2r=21

r=21/2

now, 2pie r =2 x 22/7 x 21/2

Answer 2

Answer:

Step-by-step explanation:

Circumference of circle=πd where d is diameter

=22/7×21

=22×3

=66