Ineed the answer asap you very !
a.) is 2.89 a perfect square ? why yes ? why no ?
b.) is 0.004 a prefect square ? why yes ? why no ?

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?