The company Digit Tech designs a newSmartPhone. The packaging includes anopen box made out of cardboard. Thedimensions of the boxare 12 cm long, 9 cm wide, and 9 cm high.Digit Tech expects to sell 1500 phones andpackage each phone individually in a box.In square centimeters, what is the minimumamount of cardboard Digit Tech needs topackage all 1500 new SmartPhones?

Answer:The amount of cardboard Digit Tech needs to package all 1500 new Smart Phones = 891000 square cmStep-by-step explanation:Points to remember:-Surface area of cuboidSurface area = 2(lb + bh + lh)Where, l - Length of cuboidb - Breadth of cuboid andh - Height of cuboidIt is given dimensions of cardboard box 12 cm long, 9 cm wide, and 9 cm high.To find the surface area of boxHere l = 12 cm, b = 9 cm and h = 9 cmSurface area = 2(lb + bh + lh) = 2[(9*12) + (9*9) + (12 * 9)]  = 2(108 + 81 + 108) = 2 * 297 = 594 square cmTo find the cardboard required for 1500 boxTotal cardboard = 1500 * 594 = 891000 square cm