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
54 square inches
To build the box, you need to find the surface area of the box. This can be calculated by adding the areas of all six sides of the box:
2(10x9) + 2(9x7) + 2(10x7) = 180 + 126 + 140 = 446 square inches
Since Stacey purchases 500 square inches of cardboard, she will have 54 square inches left over.