Find the total surface area of a closed cylindrical drum if its diameter is 50cm and height is 45cm.(3.14)
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Answer:
total surface area of closed drum=10,990cm²
Step-by-step explanation:
diameter is 50cm
radius=d/2=50/2=25cm
height=45cm
π=3.14
total surface area of closed drum=total surface area of cylinder=2πr(r+h)
=2x314/100x25(25+45)
=314/100x50x70
=314/2x70
=157x70
=10,990cm²
total surface area of closed drum=10,990cm²
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