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”表示“乘以”,“squared”是“平方”的正确表达。选项 D“the square of pi r”表达不准确,应该是圆半径的平方乘以圆周率。
Area of Circle FormulaThe formula for the area of a circle is given by 𝜋r2, where r is the radius of the circle. The value of 𝜋, pronounced pi, is 22/7 or 3.14. Pi is the ratio of the circumference to the diameter of a circle. It is one of the widely used mathematical ...
Circle and Parts of a Circle Definitionof Circle: A circle is the collection of all the points in a plane whose distance from a fixed point is always the same. The fixed point is called the centre of the circle and the boundary of the circle is called the circumference of the circle. ...
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 ...
To find the area of a circle, we need to find the radius first. The radius of the circle is half of the diamter which is half of 7 = 3.5 inches. Next we need to square the radius: 3.52= 3.5 x 3.5 = 12.25 cm. Finally we need to multiply this amount by pi (π). ...
Area of the Unit Circle and PiMuharrem Aktümen
Since the radius twice is the diameter of the circle, the area formula can also be written as: $$A = \pi \ \left( \dfrac{d}{2} \right)^2 = \dfrac{\pi}{4} (d)^2 $$ That is, the area of a circle is proportional to {eq}r^2 {/eq} or {eq}\dfrac...
Finding the Area of a Circle How to find the area of a circle: The area of a circle can be found by multiplying pi ( π = 3.14) by the square of the radius If a circle has a radius of 4, its area is 3.14*4*4=50.24
There are three formulas that can be used to solve for the area of a circle. First, if the radius is given, use the formula: $$\displaystyle A = \pi...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can ...
Finding a circle's area is a helpful tool for measuring the space within the circumference of a circle. Let's break down the equation and define the variables. The area of a circle is represented asA. On the other side of the equation we haveπ(Pi) multiplied byr2(radius) squared. ...