Question

this circle has a diameter of 5 inches which of these measurements is closest to the circumference of the circle 15.7 7.85 31.4 19.625

Answer 1

The closest measurement is 15.7

Explanation:

The formula for circumference is
`2\pi r`

The diameter is double the radius, so to get the radius we divide by 2.

5 divided by 2 is 2.5

Knowing "r" is 2.5 we can plug that into our equation and solve.

2 ·
`\pi` · 2.5 ≈ 15.71

The closest measurement is 15.7