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.
The formula for calculating the circumference of a circle is C = π * d, where C is the circumference and d is the diameter.
Given that the diameter is 20, the circumference can be calculated as:
C = 3.14 * 20
C = 62.8
Therefore, the approximate circumference of a circle with a diameter of 20 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 .
Given that the circumference of the circle is 574 meters, we can use the formula C = π * d to find the diameter, where C is the circumference and d is the diameter.
We can rearrange the formula to solve for the diameter:
d = C / π
d = 574 / 3.14
d ≈ 182.165605
Rounded to the nearest tenth, the diameter of the circle is approximately 182.2 meters.
If a circle has a radius of 38 inches, what is its approximate circumference to the nearest hundredths? Use 3.14 for π .
The formula for calculating the circumference of a circle is C = 2 * π * r, where C is the circumference and r is the radius.
Given that the radius is 38 inches, we can calculate the circumference as:
C = 2 * 3.14 * 38
C = 238.84
Therefore, the approximate circumference of a circle with a radius of 38 inches is 238.84 inches, rounded to the nearest hundredth.