A pizza is cut into pieces of varois sizes. If Adam eats one piece measuring 35 degrees and another 25 degrees, how much of the pizza has he eaten?

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?