Question

r = [?] ft.
C = 18.84 ft.
Shape: Circle
Find the radius (r) of a circle with a circumference of 18.84 feet.
r = C ÷ π/2
Use 3.14 for pi (π).

Answer 1

To find the radius (r) of a circle given the circumference (C), we can use the formula:

\[ C = 2\pi r \]

Given that the circumference (C) is 18.84 feet, we want to solve for r.

First, we can rearrange the formula to solve for r:

\[ r = \frac{C}{2\pi} \]

Now we can substitute the given values into the equation. We will use \( \pi \approx 3.14 \).

1. Substitute the values into the formula:

\[ r = \frac{18.84}{2 \times 3.14} \]

2. Calculate the denominator:

\[ 2 \times 3.14 = 6.28 \]

3. Now divide the circumference by this value:

\[ r = \frac{18.84}{6.28} \]

4. Perform the division:

\[ r \approx 3 \]

So the radius (r) of the circle is approximately **3 feet**.