One gallon of paint (volume = 3.79 10-3 m3) covers an area of 17.8 m2. what is the thickness of the fresh paint on the wall?

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k