A. radius B. diameter C. circumference D. area 相关知识点: 试题来源: 解析 A。本题考查圆的面积公式中字母的含义。'r'在圆的面积公式 A = πr² 中代表半径(radius)。选项 B 直径(diameter)不符合;选项 C 周长(circumference)不符合;选项 D 面积(area)不符合。反馈...
A. The circumference of the circle B. The diameter of the circle C. The radius of the circle D. Half of the diameter of the circle 相关知识点: 试题来源: 解析 C。本题考查圆的面积公式中“r”的含义。选项 A 是圆的周长;选项 B 是圆的直径;选项 D 是圆直径的一半,即半径的定义。而“r...
The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The distance from the center point to any endpoint on the circle is called the radius of a circle. Learn about the radius formulas with solved examples
A. The radius of the circle B. The diameter of the circle C. The length around the circle D. The area of the circle 相关知识点: 试题来源: 解析 C。本题考查圆的周长公式中“circumference”的含义。选项 A 是圆的半径;选项 B 是圆的直径;选项 D 是圆的面积。而“circumference”指的是圆的...
The formula for the area of a circle is A = πr². If the radius r is doubled, the new area will be ___ times the original area. A. two B. three C. four D. five 相关知识点: 试题来源: 解析 C。本题考查对数学公式中变量变化的理解以及英语表达中的倍数关系。当半径 r 加倍时...
In mathematics, the formula for the area of a circle is pi times the radius squared. If the radius of a circle is 4 centimeters, what is the area? A. 16 pi square centimeters B. 12 pi square centimeters C. 18 pi square centimeters D. 14 pi square centimeters ...
结果1 题目 The formula for the circumference of a circle is C = 2πr. If the radius of a circle is 5 cm, what is the circumference? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。周长 C = 2π×5 = 10π cm。 反馈 收藏 ...
A. diameter B. radius C. circumference D. area 相关知识点: 试题来源: 解析 D。本题考查数学词汇的名词辨析。A 选项“diameter”意为“直径”;B 选项“radius”意为“半径”;C 选项“circumference”意为“周长”;D 选项“area”意为“面积”。圆的面积是通过特定公式计算的。反馈...
The formula for finding the area of a circle is A = πd²/4, where d is the ___. A. radius B. diameter C. circumference D. perimeter 相关知识点: 试题来源: 解析 B。本题考查圆的面积公式中直径的作用。在这个公式中,d 表示直径。反馈...
Formula for the radius of the support of the potential in terms of scattering data of Phys. A, 31, N1, pp. L39-L44.Formula for the radius of the support of the potential in terms of the scattering data - Ramm, Arredondo, et... R Ag.,I Bc.,A Jh. - 《Journal of Physics.a....