The area of a circle is 154 square meters. What is the radius? (Use 3.14 for π) A. 7 meters B. 8 meters C. 9 meters D. 10 meters 相关知识点: 试题来源: 解析 A。圆的面积公式为面积=π×半径×半径,154 = 3.14×半径×半径,半径×半径 = 154÷3.14 = 49,半径 = 7 ...
If the area of a circle is 36π square centimeters, what is the radius of the circle? A. 提回资提回资3 centimeters提回资提回资 B. 四他算原能条定风常更报难料量因她本角目行四他算原能条定风常更报难料量因她本角目行6 centimeters四他算原能条定风常更报难料量因她本角目行四他算原...
If the diameter of a circle is 5 cm, what is the circumference and area of the circle? The area of a circle is 12.56 square centimeters. What is the circle's circumference? What is the radius of a circle whose area is equal to sum of the areas of the circles with radii which ar...
The area of a circle is equal to one-half the product of the base and height. Acircle=πr2orAcircle=π(d24) where r=d2, r is the radius, and d is the diameter. Example 7 What is the area of a cross-section of 0.143 in. wire? Sign in to download full-size image Solution ...
A circle is probably the most common enclosed two-dimensional figure in ordinary geometry. Whenever we study the circle, we discuss its circumference, area, and diameter.The important formulas related to the circle are as follows:{eq}\text{Area of the circle}, A=\pi {{r}^...
结果1 题目The area of a circle is 28.26 square meters. What is the radius? A. 3 meters B. 4 meters C. 5 meters D. 6 meters 相关知识点: 试题来源: 解析 A。圆的面积=π×半径的平方,28.26÷3.14=9,9 开平方为 3 米。反馈 收藏 ...
The area of a circle is 49π square meters. What is its radius? A. 7 meters B. 14 meters C. 21 meters D. 28 meters 相关知识点: 试题来源: 解析 A。本题考查圆的面积公式的逆运算。圆的面积公式是 S=πr²(S 是面积,r 是半径),已知面积是 49π 平方米,那么 r²=S÷π=49π÷...
GMAT 考满分题库The radius of a circle is 10. The area of the sector(fan-shaped) whose center angle is x is A. Which of the following formulas can express A in terms of x?
If the area of a circle is A = (pi)r^2, what is the radius in terms of the area? Solving an Equation for a Specified Variable: In mathematics, when given a formula/equation containing multiple variables, we can solve for one of the variables to get that va...
The formula for the area of a circle is: {eq}Area_{circle}\;=\;\pi r^2 {/eq} where {eq}r {/eq} is the radius of a circle. A quarter of a circle is... Learn more about this topic: Area of a Circle Using Diameter | Formula & Examp...