Hands-on exercise – Variables and Data Types

Put the lesson Variables and Data Types into practice by writing a program yourself.

Exercise field

Density of an aluminium block

An aluminium block has a mass of 27.0 grams and a volume of 10.0 cm³. Density is mass divided by volume.

Store the values in variables, calculate the density, and print it. Then print the data type of the result.

Create variables named mass, volume and density.
Print Density: 2.7 g/cm³, using round() to round the density to 2 decimal places.
Print the type of density.

Density: 2.7 g/cm³
<class 'float'>

Write your program below and press Run. Each run is checked against the expected output.

main.py

Loading editor…

or press Ctrl + Enter in the editor

Press Run to see what your program prints.

One possible solution. Other programs that print the same output are correct too.

solution.py

mass = 27.0     # gramsvolume = 10.0   # cm³density = mass / volumeprint("Density:", round(density, 2), "g/cm³")print(type(density))

Output

Density: 2.7 g/cm³ <class 'float'>