Solve for an angle in right triangles help

What is a rational number between 9.5 and 9.7

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?