circle 类定义 包含一个私有成员变量 radius,用于存储圆的半径。 包含一个构造函数,用于初始化半径。 声明了一个友元函数 calculateArea。 友元函数实现 calculateArea 函数接受一个 circle 类型的常量引用作为参数。 使用公式 面积= π× radius² 计算面积,并返回结果。 main 函数 提示用户输入圆的半径,并读取输入...
百度试题 结果1 题目A circle has radius 8cm.Calculate the area of the circle. 相关知识点: 试题来源: 解析 π×r²=π×8²=64π=201.06cm² 反馈 收藏
百度试题 结果1 题目Calculate the area of a circle with a radius of 7 cm.相关知识点: 试题来源: 解析 Area = π(radius)^2 = π(7)^2 ≈ 反馈 收藏
# Import the 'pi' constant from the 'math' module to calculate the area of a circle from math import pi # Prompt the user to input the radius of the circle r = float(input("Input the radius of the circle : ")) # Calculate the area of the circle using the formula: area = π ...
//C# - Calculate the Area of Sphere. using System; class Sphere { public static float CalculateArea(float radius) { float area = 0.0F; area = (float)(4 * Math.PI * radius * radius); return area; } public static void Main() { float radius=0.0F; float area = 0.0F; Console....
//Program to calculate the perimeter of Circle in C# using System; class Circle { public static int Main() { float radius = 0.0F; float parimeter = 0.0F; Console.Write("Enter the radius: "); radius = float.Parse(Console.ReadLine()); parimeter = (float)(2 * Math.PI * radius); ...
百度试题 结果1 题目 Calculate the length of the chord of the circle with radius r = 10 cm, length of which is equal to the distance from the center of the circle. 相关知识点: 试题来源: 解析 x=8.9443cm 反馈 收藏
Calculate the perimeter of a sector of a circle of radius 7cm and angle 210°.7cm210°Perimeter = Arc Length + radius + radius=(210)/(360)*2*π*7+7+7= 39.66cm=39.7 cm (3 s. f.)39.7Answer... cm[3] 相关知识点: 试题来源: 解析 39.7 反馈 收藏 ...
How to calculate the properties of pores like perimeter and area and the radius of the largest circle Hello everyone, Ihave several binarized images like the following and I used a software called imagej to find the properties of the pores and the out...
// Rust program to calculate the area of circle use std::io; fn main() { let mut radius:f32 = 0.0; let mut area:f32 = 0.0; let mut input = String::new(); println!("Enter radius: "); io::stdin().read_line(&mut input).expect("Not a valid string"); radius = input.trim...