Answer:
8
Step-by-step explanation:
The circumference of a circle is equal to π
, which is a number ≈
3.14
, multiplied by the diameter of the circle.
Therefore, C = π
d
.
We know that the circumference, C
, is 16
π
, so we can say that:
16
π = π
d
We can divide both sides by π to see that 16 = d
.
We now know that the diameter of the circle is 16
.
We also know that the diameter has twice the length of the radius.
In equation form: 2
r = d
2
r = 16
r = 8
Note that since 2
r = d
, the equation C = 2
π
r holds and can be used in place of C = π
d
.
