c = 3
Step-by-step explanation:
triangle is right isosceles so both sides equal 3
can use pythagorean theorem which is square each leg and set it equal to the hypotenuse (side 'c') squared
(3)^2 + (3)^2 = c^2
(9x3) + (9x3) = c^2
27 + 27 = c^2
54 = c^2
c =
simplify to equal = x which simplies to 3