Question

what is the radius if the diameter of a sphere is 10 cm?
a. 20 cm
b. 10 cm
c. 15 cm
d. 5 cm

Explanation:

Step1: Recall the relationship between radius and diameter

The formula for the radius \(r\) of a sphere in terms of its 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:

D. 5 cm