Question

If you have a circle with an area of approximately 45 square feet, what is a good estimation for the radius of the circle?(4 points)
Step 1: What is the formula for finding the area of a circle?

Step 2: What would be the first step in solving for the radius?

Step 3: What would be the second step in solving for the radius?

Step 4: The approximate radius would be about

Answer 1

Step 1: A = πr^2

Step 2: Divide both sides by π to isolate r^2: r^2 = A/π

Step 3: Take the square root: r = sqrt(A/π)

Step 4: r = sqrt(45/π) ≈ sqrt(14.324) ≈ 3.79 feet (about 3.8 ft)