Arectangular prism has a length of 4 1/2 millimeters, a width of 4 1/2 millimeters, and a height of 6 millimeters. sally has a storage container for the prism that has a volume of 143 cubic millimeters. what is the difference between the volume of the prism and the volume of the storage container? ?

Volume of a rectangular prism is found by multiplying the length by the width by the height.  The volume of our given prism would be
V = (4 1/2)(4 1/2)(6)
Converting the fractions to mixed numbers we have
V = (9/2)(9/2)(6/1) = 486/4 = 121.5

The storage container has a volume of 143, so the difference is 143 - 121.5 = 21.5 cubic mm.

Yes i could be the length of the triangle