Question

Find the missing length indicated.

Answer 1

x = 15

Explanation:

From the above diagram, we can see that the right angled triangle has been split into two by drawing a line from the altitude.

This would really in the following ratios or proportions below

25 : x = x : 9

25/x = x/9

Cross Multiply

x² = 25 × 9

x² = 225

x = √225

x = 15