Question

how many wooden box of sizes 5cm*5cm*10cm can be packed in a cardboard of size 40cm*30cm?(HOTS)​

Answer 1

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Area of cardboard box = 40*30 = 1200cm²

TSA of one wooden box = 2(5*5 + 5*10 + 5*10)

                                           = 2(25+50+50)

                                           = 2(125)

                                           = 250cm²

Hence,

Number of wooden boxes that can be packed = 1200 / 250

                                                                                = 4.8 = 4 boxes

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Answer 2

Explanation:

The total surface of a cuboid = 2(lb+bh+lh)

= 2(5+5+10) = 2× 20 = 40cm²

Area of cardboard = l×b

= 40×30 = 1200cm²

Total number of wooden box fix in cardboard = 1200/ 40 = 30 boxes.

I hope this answer is helpful for you........