use IDLE in linux/windows for the program development.Open a file and type the program .Save the file with extension '.py' eg: test.py. From the run menu click run module (F5) to run the program.If you are running the program from command prompt type $python test.py

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#Python Program to find Area and Circumference of a Circle

#Standard formula to calculate the Area of a circle is: a=π r². Circumference c=2 π r.

r=input(“Enter radius”)

a=3.14159 * r * r

c=2* 3.14159 * r

print “Area of the circle”,a

print “Circumference of the circle”,c

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#Input a time in seconds and print the time in HH:MM:SS format ( university question)

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#Python Program to find Area and Circumference of a Circle

#Standard formula to calculate the Area of a circle is: a=π r². Circumference c=2 π r.

r=input(“Enter radius”)

a=3.14159 * r * r

c=2* 3.14159 * r

print “Area of the circle”,a

print “Circumference of the circle”,c

**************************************************************************

#Input a time in seconds and print the time in HH:MM:SS format ( university question)

time=input("Enter time in seconds")

timeinmin=time/60

timeinsec=time%60

timeinhr=timeinmin/60

timeinmin=timeinmin%60

print "HH:MM::SS----",timeinhr,":",timeinmin,":",timeinsec

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timeinmin=time/60

timeinsec=time%60

timeinhr=timeinmin/60

timeinmin=timeinmin%60

print "HH:MM::SS----",timeinhr,":",timeinmin,":",timeinsec

***************************************************************************

Now you can try the following simple programs.

1) area of the circle given the diameter.

2)area of the circle given the circumference.(circumference=2*pi*r)

3)area of the circle given center point (x1,y1) and one point on the perimeter (x2,y2).

(Hint: input the two points and compute the distance between them as radius)

3)area of the circle given center point (x1,y1) and one point on the perimeter (x2,y2).

(Hint: input the two points and compute the distance between them as radius)

4)area of a triangle given three sides a,b,c.(use Heron's formula)

5)area and perimeter of a right angled triangle given width(w) and height(h).

(area=1/2.0*w*h .use Pythagoras theorem to find the hypotenuse then add the three sides to find the perimeter)

(area=1/2.0*w*h .use Pythagoras theorem to find the hypotenuse then add the three sides to find the perimeter)

6)volume and surface area of a sphere given the
radius.

(volume=4/3.0*pi*r*r*r surface area=4*pi*r*r)

(volume=4/3.0*pi*r*r*r surface area=4*pi*r*r)

7)area of an equilateral triangle given one side (s).( sqrt(3)/4.0*s*s)

8) volume and surface area of the cylinder given
radius(r) and height(h).

(volume=pi*r*r*h surfacearea=2*pi*r*r+2*pi*r*h)

(volume=pi*r*r*h surfacearea=2*pi*r*r+2*pi*r*h)

9) volume and surface area of a cube given one side
( s).

(volume=s*s*s surface area=6*s*s)

10)hypotenuse of a right-angled triangle, given the length of the other two sides.( university question) ( use Pythagoras theorem)

11)Enter length and breadth of a rectangle and find its area and perimeter.

12)Enter name and marks in 6 subjects of a student and find the total, average and percentage.

13)Enter temperature in Celsius and covert it into Fahrenheit.( F=C*(9/5.0) + 32 )

14)Write a program to read P,T, R and calculate simple interest.(SI=(P*T*R)/100)

15)Write a program to read P,T,R and calculate compound interest.(CI=P(1+R/100)*T)

16)Input a time in seconds and print the time in HH:MM:SS format ( university question)

(volume=s*s*s surface area=6*s*s)

10)hypotenuse of a right-angled triangle, given the length of the other two sides.( university question) ( use Pythagoras theorem)

11)Enter length and breadth of a rectangle and find its area and perimeter.

12)Enter name and marks in 6 subjects of a student and find the total, average and percentage.

13)Enter temperature in Celsius and covert it into Fahrenheit.( F=C*(9/5.0) + 32 )

14)Write a program to read P,T, R and calculate simple interest.(SI=(P*T*R)/100)

15)Write a program to read P,T,R and calculate compound interest.(CI=P(1+R/100)*T)

16)Input a time in seconds and print the time in HH:MM:SS format ( university question)

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