Python program to input radius of a circle and calculate its area; Through this tutorial, you will learn how to calculate area of circle using inputted radius in python.
The area of a circle is the number of square units inside that circle. If each square in the circle to the left has an area of 1 cm^{2}, you could count the total number of squares to get the area of this circle.
The area of a circle can be found by multiplying pi ( π = 3.14) by the square of the radius. e.g. If a circle has a radius of 5, its area is 3.14*5*5=78.53.
Python Program Input Radius of Circle and Calculate the it’s Area
- Algorithm to find the Area of a circle in python
- Python program which accept the radius of a circle from the user and computes the area
Algorithm to find the Area of a circle in python
Use the following algorithm and write a program to input radius of a circle and calculate its area in python:
- Import math module in python program.
- Take input number from user.
- Calculate area of the circle with a given radius by using formula pi * r**2.
- Print result.
Python program which accept the radius of a circle from the user and compute the area
# import math module from math import pi # take input from user r = float(input ("Input the radius of the circle : ")) # compute the area from radius of a circle given by user calculateArea = str(pi * r**2); #print result print ("The area of the circle with radius " + str(r) + " is: " + calculateArea)
After executing the program, the output will be:
Input the radius of the circle : 2 The area of the circle with radius 2.0 is: 12.566370614359172
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Thanks for helping