Cherese needs to buy some cardboard to build a box 10 inches long, 9 inches wide, and 7 inches high. If she purchases 500 square inches of cardboard, how much will be left over?(1 point) Responses 54 in.2 54 in. squared 406 in.2 406 in. squared 426 in.2 426 in. squared 446 in.2
To find the total surface area of the box, we add the area of all 6 sides:
2(10*9) + 2(10*7) + 2(9*7) = 180 + 140 + 126 = 446 square inches
Since Cherese purchases 500 square inches of cardboard, she will have 500 - 446 = 54 square inches left over.
Therefore, the answer is 54 in.2.