Question

Write the answer in simplest radical form

Answer 1

Answer:

y = 9$\sqrt{2}$ inches

Step-by-step explanation:

Since the base angles are congruent then the triangle is isosceles with both legs being equal.

Using Pythagoras' identity in the right triangle

y² = 9² + 9² = 81 + 81 = 162 ( take the square root of both sides )

y = $\sqrt{162}$ = $\sqrt{81(2)}$ = 9$\sqrt{2}$