This code is useful to calculate the area of a circle when the radius is known, it can be used in physics and mathematical calculations or in applications that require the area of a circle to be calculated. Flowchart:For more Practice: Solve these Related Problems:Write a Python program that...
print 'Exiting the program...' print 'OK' else: print 'Error: invalid selection.' def display_menu(): print ' MENU' print '1) Area of a circle' print '2) Circumference of a circle' print '3) Area of a rectangle' print '4) Perimeter of a rectangle' print '5) ...
>>> r = 3 >>> circumference = 2 * math.pi * r >>> f"Circumference of a Circle = 2 * {math.pi:.4} * {r} = {circumference:.4}" 'Circumference of a Circle = 2 * 3.142 * 3 = 18.85' 可以用math.pi来计算一个圆的周长。您也可以使用公式π r 计算圆的面积,如下所示: >>>...
print 'Exiting the program...' print 'OK' else: print 'Error: invalid selection.' def display_menu(): print ' MENU' print '1) Area of a circle' print '2) Circumference of a circle' print '3) Area of a rectangle' print '4) Perimeter of a rectangle' print '5) Quit' main()...
# Print the circumference of the circle: print(2 * pi * radius) 这里的第一行被称为注释,它有助于让程序更容易理解——当你回到旧代码时,对其他人和你自己都是如此。据说程序员的第一条戒律是“你应该评论”(尽管一些不太仁慈的程序员发誓说“如果很难写,就应该很难读”)。确保你的评论是有意义的...
18. Consider the following program that attempts to compute the circumference of a circle given the radius entered by the user. Given a circle’s radius, r, the circle’s circumference, C is given by the formula: C = 2πr r = 0 PI = 3.14159 # Formula for the area of a circle...
The following simple example adds annotations to a function that calculates the circumference of a circle:import math def circumference(radius: float) -> float: return 2 * math.pi * radius When running the code, you can also inspect the annotations. They are stored in a special .__...
Write a Python program to create a class representing a Circle. Include methods to calculate its area and perimeter. Sample Solution: Python Code: # Import the math module to access mathematical functions like piimportmath# Define a class called Circle to represent a circleclassCircle:# Initialize...
) print(f" The area of the circle is :{3.14*r**2}, The circumference of yuan is :{2*3.14*r}") * Enter two numbers , After comparing sizes , Printing in ascending order from small to large # Enter two numbers , After comparing sizes , Printing in ascending order from small to la...
In the below example, we are using the cmath.tau constant to calculate the circumference of a circle, which is twice the value of . We are going to multiply the radius of the circle by to obtain the circumference.Open Compiler import cmath r = 3 #radius circumference = cmath.tau * ...