Question

introduction to circles
patrick ignatius
use the provided dimensions to find the radius:
image of a circle with diameter 9.4 in and circumference 29.52 in
multiple-choice question
use the provided dimensions to find the radius.
options: 4.7 in, 29.52 in, 3.2 in, 18.8 in

Explanation:

Step1: Recall radius-diameter relation

The radius $r$ is half the diameter $d$, so $r=\frac{d}{2}$.

Step2: Substitute given diameter value

The diameter is 9.4 in, so $r=\frac{9.4}{2}$

Step3: Calculate the radius

$r=4.7$ in

Answer:

A. 4.7 in