Sin(63)=x/7
0.89100652418= x/7 > <span>0.89100652418 (7) = x/7(7)
</span><span>6.23704566932=x This is the height
</span>the area of a triangle is A=BH/2 or Base * Height /2
A= (<span>6.23704566932)(8)/2
</span>A=<span>24.9481826773 or 24.95 cm^2</span>
11.1d + 3.2h - 15 here you go
If I’m correct the area is 48
1,450 because you would plug 75 in for x
f(x)= 20(75)-50