Question

Help me plz this is hard will give points

Answer 1

Explanation:

we know circumference of a circle =
`\pi`d

here radius = 7 mm

diameter = 2*7= 14mm

therfore circumference =
`\pi` * 14

ie C = 14
`\pi`

therefore 2nd option is the answer

Answer 2

C = 14pi

Explanation:

C = pi d

The radius is 7 so the diameter is

d = 2r

d = 2*7

=14

C = pi *14

C = 14pi