15 ft.

Question

Shape: Circle
Circumference Formula: C = 2πr
What is the circumference of a circle with a radius of 15 feet?
Use 3.14 for pi (π).
C = [?] ft.
Do not round the answer.

Answer 1

To find the circumference of a circle with a radius of 15 feet using the formula \( C = 2πr \), we can plug in the values:

\[ C = 2 \times 3.14 \times 15 \]

Now, calculate it step-by-step:

1. Multiply \( 2 \times 3.14 = 6.28 \)
2. Now multiply by the radius \( 6.28 \times 15 \)

Calculating that:

\[ 6.28 \times 15 = 94.2 \]

Therefore, the circumference \( C \) is:

\[ C = 94.2 \text{ ft} \]