volume_mute
The Diameter Property
publish date: 2026/05/16 23:57:55.834157 UTC
A circle has a known radius measurement of \(4.5\text{ cm}\). Calculate the exact length of its diameter.
Answer = (1)
Correct Answer
(1) 9
Explanation
The diameter (\(d\)) of any circle is mathematically equal to exactly twice the length of its radius (\(r\)):
\[ d = 2r = 2 \times 4.5 = 9\text{ cm} \]
Reference
Mathematics for college students