Question

what is the circumference of a circle that has a radius of 8 units use 3.14 (pie) and round to the nearest hundredth

Answer 1

Remember that the formula for the circumference, $C$, of a circle is:

$C = d \pi$

In this case, we are not given the diameter. However, remember that the diameter is equivalent to two times the radius of a circle. Thus,

$d = 2 \cdot 8 = 16$,

and we can say the circumference of our circle is:

$C = 16 \cdot 3.14 = 50.24 \,\textrm{units}$

The circumference of our circle is 50.24 units.

Also, a little side note not relating to the question:

Remember that $\pi$ is spelled as "pi" not "pie." Pie is a dessert, while pi is a mathematical constant.