Question

A rectangular monitor's size is measured diagonally from 1 comer to the opposite comer. What is the size of a rectangular monitor that is 30 centimeters wide by 24 centimeters both to the nearest centimeter? 54 cm 38 cm 18 cm 7 cm

Answer 1

We need to find x, that is, the measure of the diagonal. To do this, we notice that we have a right triangle, and thus, we can apply the Pythagorean theorem. Then, we have

$\begin{gathered} x=\sqrt[]{(30\operatorname{cm})^2+(24\operatorname{cm})^2} \\ x=38.42\operatorname{cm} \end{gathered}$

Rounded to the nearest centimeter, we see that the size of the monitor is 38cm