Question

100 boxes of dimensions 20cm×10cm×5cm are required for packing some goods.how much cardboard will have to be purchased to undertake the work?

Answer 1

Answer:

TSA of 1 box = 2h(lb+bh+lh) = 2*5[(20*10)+(10*5)+(5*20)  

                     = 10*350 = 3500 cm²

so area of cardboard required for 100 boxes = 3500*100 = 350000 cm²

= 35 m²

Answer 2

70000 sq.cm. cardboard will have to be purchased to undertake the work

Step-by-step explanation:

Length of box = 20 cm

Breadth of box = 10 cm

Height of box= 5 cm

Total surface area of box = 2(lb+bh+hl)

Total surface area of box = $2(20 \times 10 + 10 \times 5 + 5 \times 20)$

Total surface area of box = $700 cm^2$

Cardboard required for 1 box = 700 sq.cm.

Cardboard required for 100 box =$700 \times 100 = 70000 cm^2$

Hence 70000 sq.cm. cardboard will have to be purchased to undertake the work

#Learn more:

250 boxes of dimensions 30cm×20cm×20cm are required for packing some books.How much of cardboard will have to be used for the same?

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