What is the approximate circumference of a circle that has a radius of 63? Use 3.14 for π and express your answer to the hundredths place.
The circumference of a circle can be found using the formula C = πd, where C is the circumference and d is the diameter.
Given that the diameter is 20, we can substitute this value into the formula:
C = 3.14 * 20
C = 62.8 (rounded to the tenths place)
Therefore, the approximate circumference of a circle with a diameter of 20 is 62.8.
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)
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)
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)
The circumference of a circle can be found using the formula C = 2πr, where C is the circumference and r is the radius.
Given that the radius is 63, we can substitute this value into the formula:
C = 2 * 3.14 * 63
C = 6.28 * 63
C ≈ 395.04 (rounded to the hundredths place)
Therefore, the approximate circumference of a circle with a radius of 63 is 395.04.
The circumference of a circle can be found using the formula C = πd, where C is the circumference and d is the diameter.
Given that the circumference is approximately 574 meters, we can use this formula to solve for the diameter.
574 = 3.14d
To isolate the diameter, divide both sides of the equation by 3.14:
d = 574/3.14
d ≈ 182.1 (rounded to the nearest tenth)
Therefore, the circle's diameter, rounded to the nearest tenth, is approximately 182.1 meters.
The area of a circle can be found using the formula A = πr^2, where A is the area and r is the radius.
Given that the radius is 75 mm, we can substitute this value into the formula:
A = 3.14 * (75)^2
A ≈ 3.14 * 5625
A ≈ 17671.25 (rounded to the tenths place)
Therefore, the approximate area of the circle is 17671.3 square millimeters.