Question

question 1 (1 point) the diameter of a circle is 15 feet. what is its radius?

a 30 feet

b 7.5 feet

c 15 feet

d 3.873 feet

Explanation:

Step1: Recall the formula for radius and diameter of a circle.

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.

Given that the diameter \( d = 15 \) feet, we substitute \( d \) into the formula: \( r=\frac{15}{2} \).

Step3: Calculate the value.

\( \frac{15}{2}=7.5 \) feet.

Answer:

b. 7.5 feet