CAN SONEONE PLEASE HELP ME WITH MY MATH PLEASE

y= sqrt(200)

Step-by-step explanation:

It is given that the peak of the triangle is also a 90 degree angle, therefore we can safely assume that you have a 45-45-90 triangle. Since it is a 45-45-90 triangle, we can also assume that the height of the triangle is 10. using pythagorean theorem, we take the sqrt((10)^2 + (10)^2) which gives us an answer of sqrt(200) or 10sqrt(2)