Chapter 6

Chapter 6 - Python Fundamentals
[Solutions for the book "Cs with Python"
by Sumita Arora for class 11]

Page 174

Q1) Write a program that generates the following output :
        5
        10
        9

Solution :

a=5
print a
print a*2
print (a*2)-1


Q2) Write a Python program that accepts radius of a circle and prints its area.

Solution :

#takes radius and prints area
a=input("Enter radius ")
res=3.14*(a**2)
print "Area of circle is :",res

Q3) Write a python program that accepts marks in 5 subjects and outputs average marks.

Solution :

a=input("Enter Marks of subject 1 ")
b=input("Enter Marks of subject 2 ")
c=input("Enter Marks of subject 3 ")
d=input("Enter Marks of subject 4 ")
e=input("Enter Marks of subject 5 ")
avg=(a+b+c+d+e)/2
print "Average marks : ",avg

Q4) Write a short program that asks for your height in centimeters and then converts your height to feet and inches.

Solution :

a=input("Enter your height in centimeters ")
inch= a/2.54
foot= inch/12
print "Your height in inches is :",inch,"in foot :",foot

Q5) Write a program to read a no. n and print n², n³ and n⁴.

Solution :

n=input("Enter any number :")
print n,n**2,n**3,n**4

Q6) Write a program to find area of a triangle.

Solution :

h=input("Enter height of the triangle : ")
b=input("Enter length of base of triangle :")
area= 0.5*b*h
print "Area of the triangle is :",area

Q7) Write a program to compute simple interest and compound interest . 

Using above formula for compound interest 

Solution :

#For Simple Interest 
p=input("Enter Principal amount ")
r=input("Enter rate ")
t=input("Enter time (in years) ")
si=(p*r*t)/100
print "Simple interest is : ",si

#For Compound Interest 
p=input("Enter Principal amount ")
r=input("Enter rate ") 
t=input("Enter time ")
n=input("Enter no. of times it is compounded ")
q=n*t
A=(p*(1+(r/n)))**q
print "Compound interest is : ",A

Q8) Write a program to input a number and print its first five multiples. 

Solution :

n=input("Enter the no. to calculate multiples ")
print n*1 #Can also be done using range but                   this chapter teaches python fundamentals.
print n*2
print n*3
print n*4
print n*5

Q9) Write a program to read details like name, class, age of a student and then print the details firstly in same line and then in separate lines.
Have 2 blank lines in these 2 different types of prints.

Solution :

n=raw_input("Enter name ")
c=raw_input("Enter Class ")
a=input("Enter age ")
print n,c,a
print
print
print n
print c
print a

Q10) Write a program to read three numbers in three variables and swap first to variables with the sums of first and second, second and third numbers respectively.

Solution :

a=input("Enter any no. ")
b=input("Enter another no. ")
c=input("Enter another number ")
a=a+b
b=b+c
print a,b,c

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