The area of a circle is 36π square meters. What is the circumference? A. 6π meters B. 12π meters C. 18π meters D. 24π meters 相关知识点: 试题来源: 解析 B。面积为 36π 平方米的圆,周长是 12π 米。由面积公式 S = πr²,36π = πr²,解得 r = 6。周长 C = 2π...
What is the circumference of a circle? A. The distance across the circle. B. The distance from the center to any point on the circle. C. The distance around the circle. D. The number of points on the circle. 相关知识点: 试题来源: 解析 C。原因:文中提到“The circumference of a ...
The circumference can be defined as the linear distance that encloses a circle. It is, in simple terms, the perimeter of a circle. We calculate the perimeter of a circle using the formula {eq}C = 2\pi r = \pi D {/eq}.Answer and Explanation: The circumference is given ...
Unit of Lenght: Calculate Circumference Result: The circumference of a circle with area 4,71 is 7.09(*) Formulas: r = 1.13 d = 2.26 C = 7.09 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area of the circle C = circumference or perimeter r = ...
单项选择题 (1)The length of arc XYZ is 18. (2)r=s A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条件(1)充分,条件(2)也充分. E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也...
The circumference of a circle is 18.84 cm. What is the radius of the circle? A. 3 cm B. 6 cm C. 9 cm D. 12 cm 相关知识点: 试题来源: 解析 A。本题考查圆的周长计算。圆的周长 = 2 ×π× 半径,半径 = 周长÷(2 ×π),即 18.84 ÷ (2 × 3.14) = 3 cm。
A circle has a radius of 5 cm. What is the circumference of the circle? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。本题考查圆的周长计算。圆的周长等于 2πr,半径是 5 厘米,周长就是 2×π×5=10π 厘米。选项 A10π 厘米错误,选项 B15π ...
Discover how to find the area and circumference of a circle. Learn the area of a circle formula, the circumference of a circle formula, how to calculate the circumference of a circle, and how to calculate the area of a circle. Related to this Question ...
What Is the Circumference of a Circle?Jason Marshall
Unit of Lenght: Calculate Circumference Result: The circumference of a circle with area 8π is 17.77(*) Formulas: r = 2.83 d = 5.66 C = 17.8 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area of the circle C = circumference or perimeter r = ...