Find the lateral curved surface area of cylindrical petrol storage tank that is 4.2 m in diameter and 405 m in height . how much steel was actually used , if 1/10 of steel actually used was wasted in making the tosed tank
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Given height = 4.5 m and radius = 2.1 m.Lateral or curved surface area = 2πrh = 2 x 22/7 x 2.1 x 4.5 = 59.4 m2
Total surface area of the closed cylindrical petrol storage tank
= 2πr (r + h)
=2 x 22/7 x 2.1x (4.5m + 2.1m) = 87.12 m2
Area of steel sheet wasted in making the tank
= (1 / 12) x Total surface area
= (1 / 12) x 87.12 m2
= 7.26 m2
Actual area of the sheet used for making the tank.
= Total surface of the tank + Area of steel sheet wasted in making the tank
= 87.12 m2 + 7.26 m2
= 94.38 m2
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Total surface area of the closed cylindrical petrol storage tank
= 2πr (r + h)
=2 x 22/7 x 2.1x (4.5m + 2.1m) = 87.12 m2
Area of steel sheet wasted in making the tank
= (1 / 12) x Total surface area
= (1 / 12) x 87.12 m2
= 7.26 m2
Actual area of the sheet used for making the tank.
= Total surface of the tank + Area of steel sheet wasted in making the tank
= 87.12 m2 + 7.26 m2
= 94.38 m2
Happy new year in advance...
If it helps you Please mark me as a brainleast answer
BrainlyRacer:
u have to find 1/10 waste
thanks
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