Question

the diameter of a circular wheel is 4.2 M what is the circumference​

Answer 1

Answer:

Diameter=4.2

so radius=2.1

circumference=2πr

circumference=2*22/7*2.1

so circumference=13.2

Answer 2

Step-by-step explanation:

Diameter of a circle = 4.2m

radius= 4.2/10m = 42/20m

circumference = 2πr

= 2 * 22/7 * 42/20

= 66/5 m.

= 13.2 m