A photographer uses 112 rolls of film to do a job. It costs £2.40 a roll and the developing and printing costs are £3.35 a roll. What was
the photographer's total cost?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?