volume_mute
Find the Radius from the Diameter
publish date: 2026/05/17 19:43:27.069593 UTC
volume_mute
Before computing the area of the circle below, the radius must be found. The diameter is labeled on the figure.
Since the length of the diameter is 10 cm and the diameter is twice the length of the radius, what is the radius?
Correct Answer
5 cm
Explanation
Since the length of the diameter is 10 centimeters and the length of a diameter is twice the length of a radius, the length of the radius is:
\[r = \frac{D}{2} = \frac{10}{2} = 5 \text{ cm}\]
Reference
Mathematics for college students