Question

Find The Circumference of The Circle with Diameter 2.1cm​

Answer 1

6.6cm

Explanation:

Use 2pie R

Diameter = 2 x radius

So your radius is 1. 05

2 x 22/7 x 1.05 = 6.6

Answer 2

Explanation:

Since the diameter is 2.1 then its radius is 1.05.

Therefore the circumference is
`C=2\pi r=2\pi (1.05)=2.1\pi`.