a cube has a side that is (5x-3)centimeters long.a.what is its surface area?b.if x=3,what is its surface area
In a cube all sides are the same length, so the surface area of one face is
(5x-3)^2
So the surface area of all 6 faces is
6(5x-3)^2
To find what it is for x = 3, sub x=3 into the above expression.