50.24 rounded to the nearest tenth is 50.2
Since the 4 is less than 5, it can't round the 2 up to 3. The 2 would stay the same.
A.
y = 15 tan(30°)
y = 15/√3 ≈ 8.66 ft
b.
y = 15 tan(40°) ≈ 12.59 ft
c.
A = 1/2 base x height ≈ 129.9 ft² and 188.8 ft² for 30° and 40°
hope it helps