What is the formula for the area of a circle? A. A = πr B. A = 2πr C. A = πr² D. A = 4πr² 相关知识点: 试题来源: 解析 C。解析:文中提到“The formula for the area of a circle is A = πr².”。 反馈 收藏 ...
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...
229K 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...
The formula for the area of a circle is A = πr². What does 'r' stand for in this formula? 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(...
The formula for calculating the area of a circle is:Area = π * r² Where "Area" is the circle's area. (pi) is a Mathematical constant with an approximate value of 3.14159. r is the radius of the circle, which is the distance squared (raised to the power of 2) from the circle...
What is the formula for circumference of a circle given the diameter? a. C=πr b. C=2πr c. C=πd d. C=2πd The Circumference of a Circle: In geometry, a circle is a set of points in a plane that are a given distance from a g...
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”指的是圆的周长,即围绕圆的长度,选项 C 正确。
The formula for calculating the area of a circle is A = πr². What does "formula" mean in this context? A. 数字 B. 公式 C. 图形 D. 运算 相关知识点: 试题来源: 解析 B。在这个语境中,“formula”指的是用于计算的规则或表达式,即“公式”,A 选项“数字”不符合;C 选项“图形”与计算...
what is the formula to find a sector in a circle? so I'm given the radius and the arc of angle 60 degrees. To find the area in that arc, the forumla is...
To find the radius of the circle whose area is equal to the sum of the areas of two circles with radii 15 cm and 8 cm, we can follow these steps:Step 1: Calculate the area of the first circle The formula for the area of a circl