Question

Hahahahahahahahaha help me

Answer 1

If we don't know the value, we may set a variable to show it. In this case, the height. Let's take it as
`h`. In the right triangle, the base is equal to
`11-7=4\textrm{ in}`, so the Pythagorean theorem here shows
`{h}^(2)+{4}^(2)={5}^(2)\Longrightarrow h=3\textrm{ in}`.

What's the area? It is
`(1)/(2)*(7+11)h=27\textrm{ in${}^(2)$}`, so it's done!