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The diameter of a semicircle is $8\,\text{inches}$ . What is the semicircle's radius? $\newline$ $\_\_\_\_$ inches

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Circles: word problems

Full solution

Q. The diameter of a semicircle is

8\,\text{inches}

. What is the semicircle's radius?

\newline

\_\_\_\_

inches

Understand the problem: Step $1$ : Understand the problem. $\newline$ We need to find the radius of a semicircle with a diameter of $8$ inches.
Apply the formula: Step $2$ : Apply the formula for the radius. $\newline$ The radius $r$ is half of the diameter $d$ . So, $r = \frac{d}{2}$ .
Plug in the diameter: Step $3$ : Plug in the diameter. $\newline$ diameter $d = 8$ inches. $\newline$ Radius $r = \frac{8}{2} = 4$ inches.

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