Question

the radius of a circle is 9 meters. what is the approximate circumference of the circle? a 14 meters b 28 meters c 43 meters d 57 meters

Explanation:

Step1: Recall the formula for circumference

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

Step2: Substitute the given radius

Given \(r = 9\) meters. Using \(\pi\approx3.14\), we have \(C=2\times3.14\times9\).
First calculate \(2\times9 = 18\), then \(18\times3.14= 56.52\approx57\) (rounded to the nearest whole number).

Answer:

D. 57 meters