Acylindrical well is 20 meters deep and has a diameter of 1.5 meters. approximately how many cubic meters of soil were dug out to make the well? (use π = 3.14.)
11.78 cubic meters
35.33 cubic meters
121.20 cubic meters
141.30 cubic meters

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?