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Find the minimum length in cm and correct to nearest whole number of the thin metal sheet required to make a hollow and closed cylindrical box of diameter 20 cm and height 35 cm. Given that the width of the metal sheet is 1 m. Also, find the cost of the sheet at the rate of Rs56 per sq m. Find the area of metal sheet required, if 10% of it is wasted in cutting, overlapping, etc. |
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