What is the circumference of a circle with a diameter of 5.75 miles? Estimate the circumference to the hundredths place using 3.14 for π

Question

.(1 point)
miles

Answer 1

To estimate the circumference of a circle with diameter d, you can use the formula:

Circumference (C) = π * d

Given the diameter d = 5.75 miles and using 3.14 for π, the circumference is calculated as follows:

C = 3.14 * 5.75

Now, perform the multiplication:

C = 18.055

To round to the hundredths place, the circumference is approximately:

C ≈ 18.06 miles

Answer 2

What is the area of a circle with a radius of 2.1 miles? Estimate the area to the hundredths place using 3.14 for π
.(1 point)
square miles

Answer 3

To estimate the area (A) of a circle with a radius (r), you can use the formula:

Area (A) = π * r^2

Given the radius r = 2.1 miles and using 3.14 for π, the area is calculated as follows:

A = 3.14 * (2.1 miles)^2

Now square the radius and multiply by π:

A = 3.14 * (4.41 square miles)

Perform the multiplication:

A = 13.8274 square miles

To round to the hundredths place, the area is approximately:

A ≈ 13.83 square miles