I’m pretty sure the answer is 50.3 but could someone please tell me if it’s square yards or yards?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?