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Question

If a sheet measuring 1 m2 costs Rs 25. The cost of sheet required for making a cubical box of edge 2.5 m is


A

Rs 755.50

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B

Rs 937.50

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C

Rs 945.50

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D

Rs 1037.50

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Solution

The correct option is B

Rs 937.50


Given: Edge (a) =2.5 m

Surface area of a cube = 6a2

= 6(2.5)2 m2

Cost of 1 m2 of sheet = Rs 25

Therefore, cost of 6(2.5)2 m2 of sheet = Rs {25×6(2.5)2}

= Rs 937.50


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