Question

Find the exact circumference of a circle with the given radius.

7 feet

C =

7π ft.
14π ft.
27π ft.

Answer 1

\[C=2piR\]

Answer 2

don't count and round pi, leave it as variable.
2pi*7 feet=14pi feet

Answer 3

formula for the circumference is C=Dπ
so all you do is get the diameter from the radius thus it would be
14πft

Answer 4

is 2pi ...3.14*2? and multiplied by c?

Answer 5

pi is not multiplied - leave it as variable - this way you will get exact answer.
2pi is multiplied by radius.

Answer 6

in order to find the circumference you multiply Diameter times π
and in order to get the diameter you double the radius

Answer 7

oh so its 14pi?

Answer 8

correct

Answer 9

yes it is

Answer 10

wow thnx so much :)