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...
(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's center to any point on its edge.So, to find the area of a circle, square the radius and multiply by pi...
The formula for the area of a circle is ___. A. A=πr² B. A=2πr C. A=πd D. A=4πr² 相关知识点: 试题来源: 解析 A。本题考查圆的面积公式。选项 B 是圆的周长公式,选项 C 是圆的直径与圆周率的乘积,选项 D 不是圆的面积公式。只有选项 A 是圆的面积公式,A 表示面积,...
The formula for the area of a circle is ___. A. πr² B. pie r square C. pi times r squared D. the square of pi r 相关知识点: 试题来源: 解析 C。选项 A 是数学符号表达,不是英语表达。选项 B“pie”拼写错误,应该是“pi”,且“square”缺少动词形式。选项 C 表达正确,“times”...
The formula for the area of a circle is ___. A. πr B. 2πr C. πr² D. 2πr² 相关知识点: 试题来源: 解析 C。圆形面积公式是π乘以半径的平方,即πr²,选项 C 正确。选项 A πr 不是面积公式;选项 B 2πr 是圆的周长公式;选项 D 2πr²不符合圆形面积的计算公...
A. A = πr² B. A = 2πr C. A = πd D. A = 4πr² 相关知识点: 试题来源: 解析 A。本题考查英语数学建模中的常见公式。圆的面积公式是 A = πr²,选项 B 是圆的周长公式的一部分;选项 C 是圆的周长公式;选项 D 错误。反馈...
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 ...
If we have a circle in a square and r is the radius of the circle and x is the measurement outside the square. What will be the formula to find the area of the whole square using x and r? The area of a circle is given the formula A = 3.14 r , where r is the radius. If ...
The formula for calculating the area of a circle is ___. A. A = πr² B. V = πr²h C.
The formula for the area of a circle is A = πr². What does 'r' stand for in this form