find the total surface area of one side opened cylindrical drum if its diameter is 50 cm and height is 45 CM
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Diameter of cylindrical drum = 50 cm
Radius of drum = 50÷2 = 25cm
Height of drum = 45 cm
Total surface area of drum =2πrh+2πr^2
=2×22/7×25×45+2×22/7×25×25
=11000cm^2
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