Question

How many square sheets of coloured paper of side 30 cm would be required to cover a wooden box having length breadth and height as 90cm,60cm and 30 cm

Answer 1

for finding we should find the volume of cube and wooden box
volume of cube =a³
volume of cube =30³cm³
volume of cube =2700cm³
volume of wooden box =l×b×h
volume of wooden box =90×60×30cm³
volume of wooden box =162000cm³

now divide both the volumes

number of square sheet required =162000cm³/2700cm³
number of square sheet required =60

therefore number of square sheet required is 60

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Answer 2

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area box = lb + bh+lh= 5400 + 1800+2700= 9900

area of sheet = 900

required sheet = 9900/900= 11

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