These are all the same type of problem
Area = (1/2) (product of known sides) * (sine of included angle)
So...the first one is
Area = (1/2) (11.1 * 7 ) sin ( 84°) = (1/2)(77.7) sin (84°) = 38.6 in^2
Knowing this....can you do the other two ???
The front door of a house is 80 inches tall. What is the Volume of the door?