Question

Edwin bicycles 3 kilometers west to get from his house to school. After school, he bicycles 4 kilometers north to his friend Hansen's house. How far is Edwin's house from Hansen's house, measured in a straight line?

Answer 1

we have

then solve for x using the Pythagorean theorem

$\begin{gathered} x^2=3^2+4^2 \\ x^2=9+16 \\ x^2=25 \\ x=\sqrt[]{25} \\ x=5 \end{gathered}$

answer: 5 km is the measured