Question

a beach umbrell has a circumference of 8.8 feet. what is the radius of the umbrella? round to the nearest tenth.

Explanation:

Step1: Write the formula for circumference

The formula for the circumference of a circle is \( C = 2\pi r\), where \(C\) is the circumference and \(r\) is the radius.

Step2: Solve for \(r\)

Given \(C = 8.8\) feet. Rearranging the formula for \(r\), we get \(r=\frac{C}{2\pi}\).
Substitute \(C = 8.8\) into the formula: \(r=\frac{8.8}{2\pi}\).

Step3: Calculate the value

\(r=\frac{8.8}{2\times3.14}\) (taking \(\pi\approx3.14\)).
First, calculate \(2\times3.14 = 6.28\).
Then \(r=\frac{8.8}{6.28}\approx1.4\)

Answer:

\(1.4\)