Ok so I have some questions and not sure if my maths is right, apoligies of this is posted in wrong place. see attachment for diagram of open topped box with dimentions, sorry about poor drawing, units in cm
1. Dirive a mathematical formula for the surface area of box?
My answer :
16 x 48 = 768 x2 = 1,536
16x 64 = 1,024 x2 = 2,048
48x64 = 3,072
add 3 answers = 6,656 cm2 is surface area
2. if each box is cut from 1m squared piece cardboard, how much wastage is there per unit?
10,000 - 6,656 = 3,344com
3. how many boxes can be cut from a ten meter square sheet of cardboard
10,000 x 10 = 100,000 / 6,656 = 15 boxes
can anyone confirm this is correct