Answer:
The height of a rectangle's side is 15 cm tall.
Step-by-step explanation:
You can use the pythagorean theorem to solve this.
The pythagorean theorem is:
[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]
The hypotenuse represents the c. One the diagram, the hypotenuse represents the diagonal. The letters a and b represents the sides (just not the diagonals).
Let's plug in.
[tex]{a}^{2} + {b}^{2} = {c}^{2} \\ {a}^{2} + {10}^{2} = {18.03}^{2} \\ {a}^{2} + 100 = 325.0809 \\ \frac{ - 100 = - 100}{ {a}^{2} = \sqrt{225.0809} } \\ a = 15.00[/tex]
Therefore, its 15 cm.