Surface area of a prism 18x24x30x7

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?

Ineed with the quizzes in apex mathematics ii

Once george got to know adam, they found that they really liked each other. this is an example of what factor in friendship