Question

In Dover, the library is due south of the courthouse and due west of the community swimming pool. If the distance between the library and the courthouse is 7 kilometers and the distance between the courthouse and the city pool is 10 kilometers, how far is the library from the community pool? If necessary, round to the nearest tenth.

Answer 1

The distance of library from the community pool can be determined as.

`\begin{gathered} d=\sqrt[]{10^2-7^2}^{} \\ =\sqrt[]{51} \\ =7.1 \end{gathered}`

Thus, the requried distance is 7.1 km.