Question

Find the exact circumference of a circle with the given radius. x/2 miles C =

¼x miles x miles 2x miles

Answer 1

πx miles

Explanation:

Given in the question,

radius of a circle = x/2 miles

To find circumference of a circle we will use following formula

2π * r

where π is constant = 3.14

r is radius of circle

Plug values in the formula

2(3.14)(x/2)

2 will cancel out

So we are left with 3.14x miles or πx miles

Answer 2

`\pi` x miles

Explanation:

Circumference, C= 2
`\pi r`

r=radius = x/2

C= 2×
`\pi` × x/2

C=
`\pi` x