## Sample Code

def hello(name): answer = "Hello " + name return answer print(hello("George")) print(hello("Gill"))

def AreaRect(length, width): return length*width l = int(input("Enter the length")) w = int(input ("Enter the width")) print(AreaRect(l, w))

PI = 3.1415 def main(): radius = 4 print("The area of a circle radius ", radius, " is ", Area(radius)) def Area(r): return PI*r*r main()

## Exercises

- Write a function that accepts a string and returns “Pleased to meet you, ” + string
- Write a function that accepts a number and returns “Child” if the number is <18 and “Adult” otherwise
- Write a function that accepts a number and returns “Grade A” if the number is >20, “Grade B” if the number is >15, “Grade C” if the number is >10 and “Fail” otherwise.
- Write a function that accepts two numbers and returns the average of the numbers
- Write a function that accepts three integers and returns the average of the numbers.
- Write a function that accepts the length and width of a rectangle and returns the perimeter of the rectangle
- Write a function that accepts the base and height of a triangle and returns the area of the triangle
- Write a function that accepts a list and returns the sum of the list

### Extension

- Write a function that returns the hypotenuse of a triangle when the other two sides are int a and int b. (Remember: hypotenuse squared equals a squared plus b squared)
- The scalar product of u=(u1,u2,u3) and v=(v1,v2,v3) is defined to be u1v1+u2v2+u3v3. Write a function that accepts two int tuples as parameters and returns an int representing the scalar product of those two tuples
- If A = (a1,a2, …an) and B = (b1,b2, …bn) then the vector sum of the two tuples A + B = (a1+b1, a2+b2, … , an+bn). Write a function that accepts two tuples as parameters and returns an array representing the vector sum of those two tuples
- The Euclidean distance between two points A = (a1,a2, …an) and B = (b1,b2, …bn) is defined as sqrt((a1-b1)
^{2}+ (a2-b2)^{2}+… + (an-bn)^{2}). Write a function that accepts two int tuples representing A and B as parameters and returns a double representing the Euclidean distance between them.