Circumference & Area of Circles Practice
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Question
What is the approximate circumference of a circle that has a diameter of 20? Use 3.14 for π and express your answer to the tenths place.(1 point)
The circumference of a circle is given by the formula C = π * d, where d is the diameter of the circle.
Given that the diameter of the circle is 20, we can calculate the circumference as follows:
C = 3.14 * 20
C = 62.8
Therefore, the approximate circumference of the circle is 62.8.
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)
meters
The circumference of a circle is given by the formula C = π * d, where d is the diameter of the circle.
Given that the circumference of the circle is approximately 574 meters and π is 3.14, we can calculate the diameter as follows:
574 = 3.14 * d
d = 574 / 3.14
d ≈ 182.16
Rounded to the nearest tenth, the diameter of the circle is approximately 182.2 meters.
wrong
Apologies for the mistake. Let's correct the calculation:
Given that the circumference of the circle is approximately 574 meters and π is 3.14, we can calculate the diameter as follows:
C = π * d
574 = 3.14 * d
d ≈ 574 / 3.14
d ≈ 182.1656051
Rounded to the nearest tenth, the diameter of the circle is approximately 182.2 meters.