Question

a hundred cubical cardboard boxes are required in a jewellery shop .the length of the edge of each box must measure 15 cm how many cardbord sheet of size 30 * 30 cm will be required to make these boxes

Answer 1

Answer:

150

Step-by-step explanation:

The cardboard sheets will make the surfaces of the box so we must calculate Total Surface Area.

TSA of a cube = 6 x side^2

                        = 6 x 15 x 15

                        = 6 x 225

                        = 1350

Hundred cubical boxes = 1350 x 100

                                       = 135000cm^2

So we will need 135000/900 cardboard sheets

                           = 150 cardboard sheets