400
Josef wants to paint the inside and outside of a box. The box is a cube shape with x in., and has no top. Write an expression to represent the surface area Josef must paint.
A) 5x squared
B) 10x squared
C) 6x squared
D) 12x squared
B) 10x squared
because there are 5 sides to the cube since there isn't a top then you would add 5 more for the inside so that would be 10 sides on the cube to paint, and you do x squared to find the area so the answer would be 10x squared.