A wooden box has inner dimensions l =6 m, b =8 m and h =9 m and it has uniform thickness of 10 cm. The lateral surface of the outer side has to be painted at the rate of Rs. 50/ m². What is the cost of painting?
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Answer:Firsr of all we calculate the dimensions of the of the wooden box by adding up the thickness to get the external dimensions, the l=6+0.2=6.2m,b=8+0.2=8.2m and height will remain to be 9m.then we calculate the lateral surface area of the box as follows :
6.2x8.2x2=101.68
6.2x9x2=111.6
8.2x9x2=147.6
Total surface area will be
101.68+111.6+147.6=360.88
The cost will be
360.88x50=18044
=Rs.18044
Step-by-step explanation:
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Answer is ₹8931.5
Its in the VII text book
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