Question

Find the value of x in the isosceles triangle shown below. 15

Answer 1

Answer:

X = 18

Step-by-step explanation

The shown figure of isosceles triangle can be drawn as :

Now it become a right angle triangle

From right angle triangle rule

hypotenuse² = Perpendicular² + Base²

i.e 15² = 12² + ($\frac{x²}{4}$

or 15² - 12² = $\frac{x²}{4}$

or 225 - 144 = $\frac{x²}{4}$

or 81×4 = x²

or x= $\sqrt{324}$

i.e X= 18      Answer