Question

What is the surface area of a number cube on which each edge has a length of 15 millimeters? (Hint: On a cube, the length, width, and height have the same measure.)

Answer 1

1350 mm you would multiply 15mm •15mm to get the area of one side. Since it is surface are you would multiply that by 6.
15•15=225
225•6=1350mm