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WorksheetsNgữ văn 8
Total questions: 11
Worksheet time: 6mins
What is the formula to calculate the circumference of a circle?
C = π * r^2
C = 2 * π * r
C = 2 * r
C = π * d
If the radius of a circle is 5 cm, what is its circumference?
25.12 cm
31.42 cm
40.84 cm
15.70 cm
Calculate the circumference of a circle with a diameter of 10 m.
40.84 m
31.42 m
15.70 m
25.12 m
If the circumference of a circle is 31.4 cm, what is its radius?
10 cm
7 cm
5 cm
3 cm
A circle has a circumference of 62.8 m. What is its diameter?
25 m
15 m
20 m
30 m
How does the circumference change if the radius is doubled?
The circumference remains the same.
The circumference triples.
The circumference increases by 50%.
The circumference doubles.
If the radius is 7 inches, what is the circumference?
Approximately 28.27 inches
Approximately 50.24 inches
Approximately 31.42 inches
Approximately 43.98 inches
What is the circumference of a circle with a radius of 3.5 feet?
15.7 feet
10.5 feet
21.99 feet
28.0 feet
If a circle has a circumference of 12.56 cm, what is the radius?
2 cm
3 cm
5 cm
4 cm
Explain why the value of π is important in calculating circumference.
π is only important in calculating the volume of a sphere.
π is the value used to calculate the area of a circle.
The value of π is important because it is the ratio of the circumference to the diameter of a circle.
The value of π is irrelevant to the properties of circles.
Bài thơ dặn con của tác giả gì?
Trần Nhuận Minh
Trần nhuận hạnh
Liêu Hà Trinh
Mùa hạ
