Question 1: What is x in the diagram below?

My Way is:

Since $48^2 + x^2 = 60^2$ Which means ${12 \cdot 4}^2 + x^2 = {12 \cdot 5}^2$ Then Dividing by 12: $4^2 + \frac{x}{12}^2 = 5^2$ solving for x we get $\frac{x}{12}^2 = 9$ so $\frac{x}{12}
= 3$ so $x = 36$
Hooraah!