The structure that surrounds the cell membrane of some cells, giving the cell a rigid shape is the cell wall.
Finding the areas of each of the rectangles and squares of the net of a rectangular prism and adding up those areas gives the surface area or total surface area of the prism. For example, if the length of one side of the cube 4 units then the area of one its face is 4 × 4 = 16 square units.
GG bb
gg GGgg bbgg
Bb GGBb bbBb
does this make sense ? I tried to set up the square best I can
Mr. Turner, my American history teacher, taught us about the U.S. home front during WWII. Enjoy!