Question

question 4 of 25
to the nearest hundredth, what is the circumference of a circle with a radius of 5 units?
a. 27.63 units
b. 15.70 units
c. 31.42 units
d. 78.54 units

Explanation:

Step1: Recall the formula

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

Step2: Substitute the radius value

Given $r = 5$, so $C=2\times\pi\times5=10\pi$.

Step3: Calculate the value

Using $\pi\approx3.14159$, $C\approx10\times3.14159 = 31.4159$.

Step4: Round to the nearest hundredth

Rounding 31.4159 to the nearest hundredth gives 31.42.

Answer:

C. 31.42 units