Question

1. a circle has a radius of 9 inches. what is the circumference of the circle in terms of π? choose the correct answer from the drop - down menu to complete the sentence. the circumference of the circle is select inches. 9π 18π 4.5π 81π

Explanation:

Step1: Recall circumference formula

Circumference \( C = 2\pi r \) where \( r = 9 \) inches.

Step2: Substitute radius into formula

\( C = 2\pi \times 9 = 18\pi \)

Answer:

B. 18π