Find the area I have no idea how to do this

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.