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”...
A. diameter B. radius C. circumference D. area 相关知识点: 试题来源: 解析 B。本题考查圆的面积公式中各个字母的含义。'r'在圆的面积公式 A = πr²中代表半径(radius)。A 选项 diameter 是直径;C 选项 circumference 是周长;D 选项 area 是面积。反馈...
In the math class, we need to calculate the area of a circle. The formula for the area of a circle is A = ___. A. 切制至切制至πr²切制至切制至 B. 包音始手调专几个派论矿包音始手调专几个派论矿2πr包音始手调专几个派论矿包音始手调专几个派论矿 C. 这始决万统技运...
If the area of a circle is 36π square centimeters, what is the radius of the circle? The formula for the area of a circle is A = πr². A. 6 centimeters B. 8 centimeters C. 4 centimeters D. 10 centimeters 相关知识点:
A. 16 pi square centimeters B. 12 pi square centimeters C. 18 pi square centimeters D. 14 pi square centimeters 相关知识点: 试题来源: 解析 A。本题考查圆的面积公式以及英语表达。圆的面积等于圆周率乘以半径的平方,半径为 4 厘米,面积就是 16π平方厘米,所以选 A。B、C、D 选项数值错误。反馈...
The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
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...
The formula for the area of a circle is A = πr², where r is the ___ of the circle. 查看试卷及答案 相关搜索 1 多半圆的面积计算公式 2 圆锥过母线的截面面积 3 圆锥过母线的截面面积 4 圆形的面积公式推导过程 答案解析 B。本题考查数学术语。“radius”意思是“半径”,在圆的面积公式中...
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 ...
The formula for the area of a parallelogram is the same as that of a ___. A. triangle B. rectangle C. trapezoid D. circle 相关知识点: 试题来源: 解析 B。平行四边形面积公式和矩形相同,都是底乘以高。选项 A 三角形面积公式不同;选项 C 梯形面积公式不同;选项 D 圆的面积公式不同。反馈...