The formula to find the circumference of a circle is C = πd, where C is the circumference and d is the diameter.
Given that the diameter is 4 feet, we can calculate the circumference:
C = πd
C = π(4)
C = 4π
Using an estimation for π ≈ 3.14, we can find:
C ≈ 4(3.14)
C ≈ 12.56
Since the given options are approximated, the best estimation for the circumference would be 13 feet (option D), as it is the closest value to 12.56 feet.
What is the circumference of a circle with a diameter = 4 feet? Which of the following is the best estimation for the circumference?
A. 50 feet
B. 6 feet
C. 25 feet
D. 13 feet
9 answers
What is the circumference of a circle with a diameter of 3.25 meters? Estimate the circumference to the hundredths place using 3.14 for π
A. 10.2 meters
B. 10.21 meters
C. 33.18 meters
D. 10.22 meters
A. 10.2 meters
B. 10.21 meters
C. 33.18 meters
D. 10.22 meters
The formula to find the circumference of a circle is C = πd, where C is the circumference and d is the diameter.
Given that the diameter is 3.25 meters, we can calculate the circumference:
C = πd
C = 3.14(3.25)
C = 10.235
Rounding to the hundredths place, the best estimation for the circumference is 10.24 meters (option D).
Given that the diameter is 3.25 meters, we can calculate the circumference:
C = πd
C = 3.14(3.25)
C = 10.235
Rounding to the hundredths place, the best estimation for the circumference is 10.24 meters (option D).
What is the circumference of a circle with a radius of 2.5 feet? Estimate the circumference to the tenths place using 3.14 for π
A. 7.85 feet
B. 16 feet
C. 15.7 feet
D. 15.6 feet
A. 7.85 feet
B. 16 feet
C. 15.7 feet
D. 15.6 feet
The formula to find the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.
Given that the radius is 2.5 feet, we can calculate the circumference:
C = 2πr
C = 2(3.14)(2.5)
C = 15.7
Rounding to the tenths place, the best estimation for the circumference is 15.7 feet (option C).
Given that the radius is 2.5 feet, we can calculate the circumference:
C = 2πr
C = 2(3.14)(2.5)
C = 15.7
Rounding to the tenths place, the best estimation for the circumference is 15.7 feet (option C).
What is the area of a circle with a radius of 12 feet? Estimate the area to the hundredths place using 3.14 for π
A. 113.04 square feet
B. 452.16 square feet
C. 75.4 square feet
D. 452.2 square feet
A. 113.04 square feet
B. 452.16 square feet
C. 75.4 square feet
D. 452.2 square feet
The formula to find the area of a circle is A = πr^2, where A is the area and r is the radius.
Given that the radius is 12 feet, we can calculate the area:
A = 3.14(12^2)
A = 3.14(144)
A = 452.16
Rounding to the hundredths place, the best estimation for the area is 452.16 square feet (option B).
Given that the radius is 12 feet, we can calculate the area:
A = 3.14(12^2)
A = 3.14(144)
A = 452.16
Rounding to the hundredths place, the best estimation for the area is 452.16 square feet (option B).
What is the area of a circle with a diameter of 10 millimeters? Estimate the area to the tenths place using 3.14 for π
A. 314 square mm
B. 15.7 square mm
C. 78.5 square mm
D. 79 square mm
A. 314 square mm
B. 15.7 square mm
C. 78.5 square mm
D. 79 square mm
The formula to find the area of a circle is A = πr^2, where A is the area and r is the radius.
Given that the diameter is 10 millimeters, we need to find the radius first. The radius is half of the diameter, so the radius would be 10/2 = 5 millimeters.
Now, we can calculate the area:
A = 3.14(5^2)
A = 3.14(25)
A = 78.5
Rounding to the tenths place, the best estimation for the area is 78.5 square millimeters (option C).
Given that the diameter is 10 millimeters, we need to find the radius first. The radius is half of the diameter, so the radius would be 10/2 = 5 millimeters.
Now, we can calculate the area:
A = 3.14(5^2)
A = 3.14(25)
A = 78.5
Rounding to the tenths place, the best estimation for the area is 78.5 square millimeters (option C).