Question

Help me with this please

Answer 1

x = +√39

Explanation:

In the diagram we see two right triangles. The measure of the base of each one is half of 8, or just 4.

According to the Pythagorean Theorem,

(√54)^2 = 4^2 + x^2, or

54 - 16 = x^2 = 39, so that x = +√39