Question

The radius of a circle measures 7 mm . What is the circumference of the circle?

Use 3.14 and do not round your answer. Be sure to include the correct unit in your answer.

Answer 1

The circumference is:

43.96 mm

Work/explanation:

The formula for the circumference of a circle is:

`\sf{C=2\pi r}`

where,

C = circumference

π = 3.14

r = radius

Plug in the data:

`\sf{C=2*3.14*7}`

`\sf{C=3.14*14}`

`\sf{C=43.96\:mm}`

Hence, the circumference is 43.96 mm.

Answer 2

Hello !

Answer:

`\Large \boxed{\sf C=43.96\ mm}`

Explanation:

The circumference of a circle is given by the following formula :
`\sf C=2\pi r` where r is the radius.

Given :

• r = 7mm

Let's replace r with its value in the formula :

`\sf C=2*\pi* 7\\\sf C=14* 3.14 \\\boxed{\sf C=43.96\ mm}`

Have a nice day ;)