Circumference & Area of Circles Practice
Complete this assessment to review what you've learned. It will not count toward your grade.
3 of 53 of 5 Items
Question
A circle has an approximate circumference of 574 meters. What is the circle’s diameter, rounded to the nearest tenth? Use 3.14 for π . (1 point)
a
meters
183.0 meters
wrong
Apologies for the error. Let's calculate the diameter using the formula for the circumference of a circle:
Circumference = π * diameter
574 = 3.14 * diameter
diameter = 574 / 3.14
diameter ≈ 182.8 meters (rounded to the nearest tenth)
Therefore, the circle's diameter, rounded to the nearest tenth, is 182.8 meters.
If a circle has a radius of 38 inches, what is its approximate circumference to the nearest hundredths? Use 3.14 for π.(1 point)
inches
To find the circumference of a circle, you can use the formula:
Circumference = 2 * π * radius
Given that the radius is 38 inches and π is 3.14, we can calculate the circumference:
Circumference = 2 * 3.14 * 38
Circumference ≈ 238.84 inches
Therefore, the approximate circumference of the circle with a radius of 38 inches to the nearest hundredths is 238.84 inches.