Does a parallelogram have to have equal sides

Yes

Step-by-step explanation:

A Parallelogram is a flat shape with opposite sides parallel and equal in length.  NOTE: Squares, Rectangles and Rhombuses are all Parallelograms

Hope this helps (:

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are