Answer:
4
Step-by-step explanation:
A carpenter uses 4 nails to install each shelve
here u go! i hope this is correct :)
Surface area is what it seems to be. All of the area of the solid's faces together. Like a cube, just find the areas of all of the squares that make the cube then add them together.
Answer:
add all the sides together
a+b+c+d
280 + 220 = 500 is the answer