Help what is the answer

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

Which equation can be solved to find x the measure of jk in the apex