10. How much metal sheet is required to make an open cylindrical tank – InterviewSolution

1.	10. How much metal sheet is required to make an open cylindrical tank of radius 4.2 m and height 15 m.
Answer» Sheet required=Curved surface area of cylinder+ area code f base=2πrh+πr²=2(22/7)(4.2)(15)+(22/7)(4.2)²=395.84+55.41=451.25m²

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