Question

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?

Answer 1

perimeter of cuboid = 4 (l + w + h)

= 4 (10 + 9 + 7) = 104

500-104=396

so there will be 396 square inches of cardboard left over.

Explanation: