Question

Given the diagram shown below, find the value of 3x

Answer 1

18

Explanation:

The triangle is a right triangle with sides 3x, 4x, 5x.

5x = 30

x = 6

3x = 3(6) = 18

Answer: 18

Answer 2

x= 6

Explanation:

by using Pythagoras theorem

(30)={(9x^2+ 16x^2)}1/2

30= 5x

x= 30/5

x= 6