Find (1) The total surface area of a closed cylindrical petrol storage tank whose diameter
4.2 m. and height 4.5 m.
(i) How much steel sheet was actually used, if 1/12
of the steel was wasted in making
of the tank. (anewer quickly and steps in order )​

The total surface area of a closed cylindrical petrol storage tank whose diameter is 4.2m. and height 4.5m. is 87.12sq. m how much steel sheet was actually used , if 1/12 of the steel was wasted in making the tank.

Since 1/12 of the actual steel used was wasted, the area of the steel which has gone into the tank = 11/12 of x.

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step-by-step explanation:

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step-by-step explanation: