In order to find the surface area of a cube, you need to find the area of one of the sides.
15*15 = 225
this would then be multiplied by 6 to account for all of the sides of the cube.
225*6 = 1350 millimeters ^2
Answer:
4.5 lb
Step-by-step explanation:
225/50 = 4.5 lb
Check work: 4.5 * 50 = 225 lb
Subtract 4.5 from 20.5 and you'll have your answer which is x=16
