Step-by-step explanation:
x+100°=180°{being straight angle}
x=180-100
x=80°
again,
45°+x+y=180°{sum of angle of triangle}
45+80+y=180
y=180-125°
y=55°
hope it helps.
Answer:
998/1000
or
499/500 simplified
v=Bh
B=6×4.5
v=27×9
v=243ft³
3
