Question

Help please

What is the formula for
circumference of a circle
given the diameter ?

Answer 1

The answer is option D

Explanation:

The formula for circumference of a circle is
`2\pi r` , since the diameter is double the radius we change the 2 and r of the equation into just the diameter which is D.

Hope you understood

Answer 2

Option D

Explanation:

Circumference is usually given by:

C = 2πr

But, since diameter = 2r

So,

C = π (2r)

C = πd

`\rule[225]{225}{2}`

Hope this helped!

~AH1807