Ms. Russa has to drive 12 miles north from her house to go to work. From work, she goes to the store which is 9 miles east from the school. If she were to drive in a straight line from the
store to her home, how many miles would she travel?

Explanation:

Given

Required

Distance from her house to the store

If she drive straight from her house to the store, this would form a right angled triangle;

Where the horizontal line would be:

And the vertical line;

And the required distance would be the hypothenuse of the triangle;

Using Pythagoras, we have:

Take square root of both sides

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