Hans is building a fence to put around his rectangular garden. How many yards of fencing will Hans need to enclose the garden on all four sides?

10.5 yd
21 yd
7.5 yd
15 yd

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?