SOLUTION: from a rectangular piece of paper of size 100 cm by 80 cm are cut four squares of side 10 cm from each corner the flaps are folded and an open box is formed find the surface area

Question 126504: from a rectangular piece of paper of size 100 cm by 80 cm are cut four squares of side 10 cm from each corner the flaps are folded and an open box is formed find the surface area of box so formed.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The area of your original piece of paper was 100 X 80 = 8000 cm^2. You removed 4 pieces each of which had an area of 100 cm^2 (10 X 10). So you removed 400 cm^2. 8000 - 400 = 7600 cm^2. That gives you the surface area of either the outside of the box or the inside of the box. If you are considering the total surface area to be both the inside and the outside, just multiply 7600 by 2.
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