Question

Find the circumference and area of a circle with a diameter of 22 inches.

Leave your answers in terms of pi. (4 points)

Answer 1

`Circumference=22\pi\;inches \\\\Area =121\pi \;inches^2`

Explanation:

Diameter of the circle=
`22\;inches`

`Radius=(22)/(2) =11\;inches`

Circumference of a circle:

`=2* \pi * r`

`=2* \pi * 11\\\\=22\pi \;inches`

Area of the circle:

`=\pi * r^2`

`=\pi * 11* 11\\\\=121* \pi \\\\=121\pi \;inches^2`