Stacy needs to buy some build a box 10 inches long 9 inches wide and 7 inches high if she purchase 500 square inches of cardboard how much will be left over
To determine the total surface area of the box, we need to calculate the surface area of each of the six faces.
The two faces that are 10 inches long and 9 inches wide will have a combined surface area of 10*9*2 = 180 square inches.
The two faces that are 10 inches long and 7 inches high will have a combined surface area of 10*7*2 = 140 square inches.
The two faces that are 9 inches wide and 7 inches high will have a combined surface area of 9*7*2 = 126 square inches.
Adding all these together, we have a total surface area of 180 + 140 + 126 = 446 square inches.
Since Stacy purchased 500 square inches of cardboard, she will have 500 - 446 = 54 square inches left over after building the box.