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)
First, let's calculate the surface area of the box to determine how much cardboard will be needed:
Surface Area = 2(lw + lh + wh)
Surface Area = 2(10*9 + 10*7 + 9*7)
Surface Area = 2(90 + 70 + 63)
Surface Area = 2(223)
Surface Area = 446 square inches
Since Cherese purchased 500 square inches of cardboard, she will have 500 - 446 = 54 square inches left over.
Therefore, Cherese will have 54 square inches of cardboard left over.