6x - 8 - 4x + 11 = 15 + 3x - 11 solve for x show work

The formula for the circumference of a circle is:

C = 2πr

The radius (r) is half of the diameter, so to find the radius just divide the diameter by two...

radius = 20 ÷ 2

radius (r) = 10 m

Plug in what you know into the formula for the circumference:

C = 2π(10)

C = 20π

The exact circumference is: 20π m

The approximate circumference is: 63 m

Hope this helped!

~Just a girl in love with Shawn Mendes