Circumference & Area of Circles Practice
Complete this assessment to review what you've learned. It will not count toward your grade.
4 of 54 of 5 Items
Question
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
Circumference = 2 * π * radius
Circumference = 2 * 3.14 * 38
Circumference = 2 * 3.14 * 38
Circumference ≈ 238.84 inches
Therefore, the approximate circumference of the circle to the nearest hundredths is 238.84 inches.
wrong
I apologize for the mistake. Let's correct that calculation:
Circumference = 2 * π * radius
Circumference = 2 * 3.14 * 38
Circumference = 6.28 * 38
Circumference = 239.92
Therefore, the approximate circumference of the circle with a radius of 38 inches is 239.92 inches to the nearest hundredths.
still wrong
I apologize for the mistake. Let's correct that calculation:
Circumference = 2 * π * radius
Circumference = 2 * 3.14 * 38
Circumference = 6.28 * 38
Circumference = 238.64
Therefore, the approximate circumference of the circle with a radius of 38 inches is 238.64 inches to the nearest hundredths.
wrong bot are you dume
I apologize for the mistake in my previous responses. Let's correct the calculation one more time:
Circumference = 2 * π * radius
Circumference = 2 * 3.14 * 38
Circumference = 6.28 * 38
Circumference = 238.64
Therefore, the approximate circumference of the circle with a radius of 38 inches is 238.64 inches. Thank you for your patience.
hooray!The radius of a circle is 75 mm. What is the approximate area of the circle? Write your answer to the tenths place. Use 3.14 for π.(1 point)
mm2!!
To find the area of a circle, we use the formula:
Area = π * radius^2
Given:
Radius = 75 mm
π ≈ 3.14
Plugging in the values:
Area = 3.14 * (75)^2
Area = 3.14 * 5625
Area = 17677.5 mm^2
Therefore, the approximate area of the circle with a radius of 75 mm is 17677.5 mm^2.