1. Variables

Exercise 1.1

There are a square S and a circle C. The dimensions of them are stored in the following variables:

In [1]:

pi = 3.14159

diameter = 11.2

side = 4.5

where diameter contains the diameter of the circle C, side contains the measurement of the side of the square S, and pi contains the value of .

Use the above variables to compute the total areas of square S and circle C:

• First, compute the area of square S and store it in areaS.
• Then compute the area of circle C and store it in areaC.
• Add the two areas together and store it in total.
• Print the total area.

NOTES: You must use the variable defined above for your computation, do NOT use the actual numeric values.

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# write your code here

Exercise 1.2

Take a look at the following code segments (run it if needed), then answer the questions below.

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a = [1, 2, 3]

b = a

Do a and b have the same value? Your answer [Yes/No]:

Do a and b reference the same object? Your answer [Yes/No]:

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a = [1, 2, 3]

b = list(a)

Do a and b have the same value? Your answer [Yes/No]:

Do a and b reference the same object? Your answer [Yes/No]:

2. Data Types

Exercise 2.1

a. Add a command to print out the data type of the variable x in the following code segment:

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x = 2.56

b. Use type casting to change x to a string and assign it to variable y

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c. Check if y is indeed a string by printing out the data type of variable y

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Exercise 2.2

You're given a string s. Write a program that prints the last character in string s.

Notes: You do NOT know how many characters there are in s.

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# use this to test your code

s = 'hello'

# add your code below

Extra credit

Add a cell BELOW this cell and write a program that prints the last 2 characters in string s.

3. Control Flow

Exercise 3.1

Write a program that examines three variables, x, y and z, and prints the largest number among them.

Note: The use of the max(), min(), sort(), or sorted() functions is NOT allowed! Please use the if, elif, and else statements!

In [ ]:

# Use these variables to test your code

x = 1

y = 2

z = 3

# Write your code here

Use the following test cases to test your code (by editing the values of x, y, and z variables above, then re-run the cell:

• x = 4, y = 4, z = 4 (expected output: 4)
• x = 7, y = 2, z = 6 (expected output: 7)
• x = 2, y = 2, z = 1 (expected output: 2)
• x = 2, y = 4, z = 2 (expected output: 4)

NOTES: The test cases used for grading will be similar to the ones above but not exactly the same.