Question

the radius of a circle is 13 centimeters. what is the circles circumference?
r=13 cm
round your answer to the nearest hundredth.
centimeters

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $r$ is the radius.

Step2: Substitute radius value

Substitute $r = 13$ cm into the formula:
$C = 2\pi \times 13 = 26\pi$

Step3: Calculate numerical value

Use $\pi \approx 3.14159$ to compute:
$C \approx 26 \times 3.14159 = 81.68134$

Step4: Round to nearest hundredth

Round 81.68134 to two decimal places:
$C \approx 81.68$

Answer:

81.68 centimeters