Exercises

Exercise 1

Assume that we execute the following assignment statements:

width = 17 
height = 12.0 
delimiter = '.' 

For each of the following expressions, write the value of the expression and the type (of the value returned by the expression).

• width/2

• width/2.0

• height/3

• 1 + 2 * 5

• delimiter * 5

Use the Python interpreter to check your answers.

Exercise 2

Practice using the Python interpreter as a calculator:

• The volume of a sphere with radius $r$ is $\frac{4}{3} \pi r^3$. What is the volume of a sphere with radius 5? Hint: 392.6 is incorrect!

• Suppose the cover price of a book is £24.95, but bookstores get a 40% discount. Shipping costs £3 for the first copy and 75 pence for each additional copy. What is the total wholesale cost for 60 copies?

• If I leave my house at 6:52 am and run 1 mile at an easy pace (8'15" per mile), then 3 miles at tempo (7'12" per mile) and 1 mile at easy pace again, what time do I get home for breakfast?