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. 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...
What is the area of a circle with a radius of 15? Updated:4/28/2022 Wiki User ∙14yago Best Answer 706.86 square units. Wiki User ∙14yago This answer is: Add your answer: Earn +20pts Q:What is the area of a circle with a radius of 15? Write your answer... Submit...
Then the radius of the small circle is R/2. Since the area of a circle is in direct proportion to its squared radius, the ratio of the area of the small circle to the area of the big circle is 1/4 , which means the combined area of the two small circles is half of the area o...
What is the square meter used to measure? The square meter is used to measure the area of a square or rectangle. It can also be used to measure the area of a circle, although the SI unit for measuring the area of a circle is square kilometer. ...
What is the perimeter of a square which has the same area as a circle with circumference of 4? Area of Circles and Squares: In the planner space, a circle is a closed geometry whose all points make a round shape and all points are situated at the cons...
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.
Then the radius of the small circle is . Since the area of a circle is in direct proportion to its squared radius, the ratio of the area of the small circle to the area of the big circle is , which means the combined area of the two small circles is half of the area of the big...
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