Question 74

The area of the cardboard needed to make a closed box of size 10 cm $$\times$$ 15 cm $$\times$$ 8 cm will be:

Solution

Total area of the card box i.e six faces of it=2*15*8 + 2*10*15 + 2*8*10
=240+300+160
=700 sq cm 


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