Question

the diameter of a circle is 20 inches. what is the radius?
d=20 in
give the exact answer in simplest form.
inches

Explanation:

Step1: Recall the relationship between diameter and radius

The radius \( r \) of a circle is half of its diameter \( d \), so the formula is \( r=\frac{d}{2} \).

Step2: Substitute the given diameter into the formula

We know that \( d = 20 \) inches. Substituting this into the formula \( r=\frac{d}{2} \), we get \( r=\frac{20}{2} \).

Step3: Simplify the expression

Simplifying \( \frac{20}{2} \) gives \( 10 \).

Answer:

10