what is the circumference of a circle with a raidus of 2.5 feet? estimate the circumference to the tenths place using 3.14 for pi

Question

A. 15.7
B. 15.6
C. 7.85
D. 16

Answer 1

To find the circumference of a circle, you can use the formula:

\[ C = 2 \pi r \]

where \( C \) is the circumference, \( \pi \) is approximately 3.14, and \( r \) is the radius of the circle.

Given that the radius \( r = 2.5 \) feet, we can calculate the circumference:

\[ C = 2 \times 3.14 \times 2.5 \]

Calculating this step-by-step:

1. First, calculate \( 2 \times 2.5 = 5 \).
2. Then, multiply by \( \pi \): \( 5 \times 3.14 = 15.7 \).

So, the circumference is approximately 15.7 feet.

The correct answer is: A. 15.7