Question

Help with a few questions(:?

Answer 1

ok first you need to find the height for that use the triangle to solve it
use the circled triangle to solve it
since you have the adjacent which is 22-12ft =10ft
and you are also given and angle 45 degrees so us tan to the opposite which is also height

\[\tan45=\frac{ h }{ 10 } \]
h=10*tan45 = 10ft
therefore the height is 10ft
now use these numbers and substitute in the area eqaution
which is \[A=\frac{ a+b }{2 }h= \frac{ 12+22 }{ 2 }*10 = 170\]

Answer 2

got it?