Question

if the diameter of a cone is 10 cm, what is the radius?
a. 5 cm
b. 7.5 cm
c. 2.5 cm
d. 10 cm

Explanation:

Step1: Recall the relationship between radius and diameter

The formula for radius \(r\) in terms of diameter \(d\) is \(r=\frac{d}{2}\).

Step2: Substitute the given diameter value

Given \(d = 10\) cm. Substitute into the formula: \(r=\frac{10}{2}\).

Step3: Calculate the radius

\(\frac{10}{2}=5\) cm.

Answer:

A. 5 cm