The diameter of a circle is 10 cm. What is its circumference? (Take π = 3.14) A. 31.4 cm B. 62.8 cm C. 15.7 cm D. 78.5 cm 相关知识点: 试题来源: 解析 A。圆的周长 = π×直径,此题中直径为 10 cm,π取 3.14,所以周长为 3.14×10 = 31.4 cm。
If the circumference of a circle is 4cm,its area is ( ) cm2. A. 4πB. 16πC. 4πD. 16π相关知识点: 试题来源: 解析 A 2π(42π)=4,so radius=42π=2π. Area=π(4π2)=4π. 如果一个圆的周长为4cm,那么这个圆的面积是( ). A.4π B.16π C.4π D.16π 面积为4...
How to find the perimeter of a circle with a radius of 1.965 meters? A circle has a diameter of 3.93 meters. What is its circumference? If a circle has a area of 12.13 square meters. What is its perimeter? Disclaimer While every effort is made to ensure the accuracy of t...
The radius of a circle always equals half of its diameter, so to find the diameter, multiply the radius by two. For example, if you know the radius of a circle is 4 centimeters, work out 4×2=8 The diameter of the circle is 8 centimeters. Find Diameter From Circumference 1. Note th...
Questions this calculator can answer: How to find the perimeter of a circle with a radius of 4 inches? A circle has a diameter of 8 inches. What is its circumference? If a circle has a area of 50.27 square inches. What is its perimeter?
百度试题 结果1 题目4. What is the circumference of a circle with diameter 12 cm? 37.2cm 相关知识点: 试题来源: 解析 37.2cm 反馈 收藏
The circumference of a circle is calculated by using the formula C = 2πr. If the radius is 3 centimeters, the circumference is approximately ___. A. 9.42 centimeters B. 18.84 centimeters C. 28.26 centimeters 相关知识点: 试题来源: 解析 B。本题考查圆的周长公式以及数学运算和英语表达。圆的...
百度试题 结果1 题目1. Calculate the circumference of each circle below, giving your answers to 2 d.p.a)b)c)d)-4 cm3.5 cm9.2 cm0.5 m 相关知识点: 试题来源: 解析 1. a) 25.13cmb) 21.99cmc) 28.90cmd) 1.57m 反馈 收藏
The diameter of a circle is the distance across a circle directly through its center. The radius is one half of the diameter in measurement. The radius measures the distance from the very center of the circle to any point on the circle. You can calculate
Geometrical shapes in two dimensions are enclosed by a line boundary. This line boundary is known as perimeter. For a circle, the perimeter or the circumference is calculated as {eq}C=\pi D {/eq}.Answer and Explanation: The circumference of circle with a diameter of {eq}D {/e...