Question

#15-5: Find the circumference of a circle that has a radius of 84 inches. Use (pi sign) for pi.

Answer 1

The formula for the circumference of a circle is:

2πr

In this case the radius is 84. Plug this into the equation given above.

2π * 84

Multiply 2 and 84

168π <<< This is the exact answer

The approximate answer is:

527.79

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer 2

`\huge{\boxed{168 \pi}}`

To find the circumference of a circle when you know its radius, use
`2 \pi d`, where
`d` is the diameter.

Substitute in the radius of 84.
`2 * \pi * 84`

Multiply the constants.
`\boxed{168 \pi}`