a closed cylindrical tank of diameter 20 m and height H metre is made from a metal sheet . if 2640 square feet is used to find the height of the tank
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area of closed cylinder = 2πr(r+h)
2640 = 2×22×10(10+h)/7
2640×7÷440= 10+h
42= 10+h
32= h
2640 = 2×22×10(10+h)/7
2640×7÷440= 10+h
42= 10+h
32= h
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