Chloe is sorting items at a thrift store. she finds a box of tiny blocks that has 1,344 written on the outside. she can see that each layer in the box has 64 blocks. how many layers of blocks are there?

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?