10. the area of curve of an open cylindrical is 500 CM. this cylindrical is cut from it's hight to from a rectangular sheet 50 CM. wide. find the perimeter of a rectangular sheet
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Answer:
Lettheradiusoftheofthecylinderbercm
whenrectangularsheetisformedintocylinderbyrollingitalongitslength
thenlengthofthesheet=circumferenceofthecircle
lengthofrectangularsheet=44cm
so2πr=44
r=
2π
44
(puttingπ=
7
22
)
r=7cm
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