A) Stacey 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 446 square inches 446 square inches 54 square inches 54 square inches 426 square inches 426 square inches 406 square inches
To determine the amount of cardboard needed to build the box, we need to find the surface area of the box.
Surface Area = 2lw + 2lh + 2wh
Surface Area = 2(10)(9) + 2(10)(7) + 2(9)(7)
Surface Area = 180 + 140 + 126
Surface Area = 446 square inches
Since Stacey purchases 500 square inches of cardboard, the amount left over will be:
500 - 446 = 54 square inches
Therefore, the answer is 54 square inches.