The diameter of a circle is 8 cm. What is its radius? A. 2 cm B. 4 cm C. 6 cm D. 16 cm 相关知识点: 试题来源: 解析 B。本题考查圆的直径和半径的关系。“radius”是半径,“diameter”是直径,半径是直径的一半,直径 8 厘米,半径就是 4 厘米。A 选项 2 厘米错误;C 选项 6 厘米...
RADIUS was originally designed to support large numbers of users connecting remotely to internet service providers (ISPs) or corporate networks via modem pools or other point-to-point serial line links. RADIUS is now commonly used forremote accessacross different types of networks, including wireless ...
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÷...
Remote Authentication Dial-In User Service (RADIUS) is a distributed information exchange protocol that uses a client/server model. It protects a network against unauthorized access and is often used on networks that need to provide high security while a
题目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 米。常见...
百度试题 结果1 题目A circle has a diameter of 10 meters. What is the radius? A. 5 meters B. 6 meters C. 7 meters D. 8 meters 相关知识点: 试题来源: 解析 A。圆的半径是直径的一半,所以半径是 10 除以 2 等于 5 米。反馈 收藏 ...
A. 6 centimeters B. 8 centimeters C. 4 centimeters D. 10 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数学表达的理解。已知面积为 36π,根据圆的面积公式 A = πr²,可得 36π = πr²,两边同时除以π,得到 36 = r²,r = 6。选项 A 正确。选项 B、C、D ...
A circle has an area of 78.5 square centimeters. What is the radius in millimeters? A. 50 B. 10 C. 5 D. 25 相关知识点: 试题来源: 解析 C。圆的面积公式为πr²。已知面积是 78.5 平方厘米,π取 3.14,可算出半径 r 的平方等于 78.5 除以 3.14 等于 25,所以半径 r 等于 5 厘米。1 ...
A circle has a diameter of 10 cm. What is the radius of the circle? A. 5 cm B. 10 cm C. 20 cm D. 2.5 cm 相关知识点: 试题来源: 解析 A。圆的半径是直径的一半,直径为 10 cm,所以半径为 10 ÷ 2 = 5(cm)。选项 B 是直径,选项 C 计算错误,选项 D 不符合半径与直径的关系。
The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The distance from the center point to any endpoint on the circle is called the radius of a circle. Learn about the radius formulas with solved examples