A closed cylindrical tank, made of thin iron-sheet, has diameter 8.4 m – InterviewSolution

1.	A closed cylindrical tank, made of thin iron-sheet, has diameter 8.4 m and height 5.4 mHow much metal sheet, to the nearest m2, isused in making this tank, if 1/15 of the sheetactually used was wasted in making the tank?
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