Question

1. what is the radius if the diameter of a cylinder is 10 cm?

a. 20 cm
b. 2.5 cm
c. 5 cm
d. 10 cm

Explanation:

Step1: Recall the relationship between radius and diameter

The formula for the radius \(r\) of a circle (or in this case, the circular base of the cylinder) in terms of the diameter \(d\) is \(r=\frac{d}{2}\).

Step2: Substitute the given diameter value

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

Step3: Calculate the radius

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

Answer:

C. 5 cm