Question

What's the circumference of a

circle with a radius of 7 feet?
Use 3.14 for .
C = [?] feet
Enter the number that belongs in the green
box. Do not round your answer.
Hint: C = 2πr

Answer 1

43.96ft

Explanation:

In the hint, you are given the equation
`C = 2\pi r`.

Here,
`C` is the circumference,
`r` is the radius, and
`\pi` is a constant (a value that doesn't change). In this question, you are told to assume the value of
`\pi` is 3.14.

You are told the radius is 7, therefore,
`r` = 7.

Now we have these values, let's substitute them into the equation:

`C = 2 * 3.14 *7`

For clarification, the stars mean multiplication.

So, the product of those values will give us our circumference,
`C`.

In this case, you get an answer of 43.96ft.