Question

find the circumference and the area of a circle with radius 9 ft.
use the value 3.14 for π, and do not round your answers. be sure to include the correct units in your answers.
circumference:
area:

Explanation:

Step1: Calculate the circumference

The formula for the circumference of a circle is \(C = 2\pi r\). Given \(r = 9\) ft and \(\pi=3.14\), substitute the values:
\(C=2\times3.14\times9\)
\(C = 6.28\times9\)
\(C=56.52\) ft

Step2: Calculate the area

The formula for the area of a circle is \(A=\pi r^{2}\). Substitute \(r = 9\) ft and \(\pi = 3.14\):
\(A=3.14\times9^{2}\)
\(A=3.14\times81\)
\(A = 254.34\) \(ft^{2}\)

Answer:

Circumference: \(56.52\) ft
Area: \(254.34\) \(ft^{2}\)