Why does the surface area quadruple in size when each factor is doubled? (Rectangular prism)

Answer 1

Original surface area

2LW + 2LH + 2WH

Altered surface area

2(2L)(2W) + 2(2L)(2H) + 2(2W)(2H)

4[2LW + 4[2LW] + 4[2WH]

Draw a rectangle.

Double the length and width

What happened to the area.