Question

Find the value of x.

Answer 1

x = 12

Explanation:

Using the formula (which is a geometric mean):

a y

---- = -----

x a

Where a is the altitude (6), x is a projection (x), and y is the other projection (3):

6 3

---- = -----

x 6

Cross multiply:

36 = 3x

12 = x

x = 12