Question

6. The diameter of a circle is 9 feet. What is the measure of its circumference? Round to the nearest tenth.
A. 28.3 ft

B. 63.6 ft

C. 4.5 ft

D. 14.1 ft

Answer 1

Answer:

A.

$C= 28.3 \ \ feet$

Step-by-step explanation:

Formula for Circumference is

$C=2\pi r$

We know radius is half of diameter

$r=\frac{d}{2} \\r=\frac{9}{2}$

$C=2(3.14)\frac{9}{2}$

$C=(3.14)9\\C=28.3 feet$