find the area of sheet required to cover both in of an open cylinder whose curve area is 3080 CM square and height is 35 cm
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Curved surface area cylinder =2Πrh
3080cmsq.= 2×(22÷7)×r×35cm
3080=220×r
3080÷220=r
r= 14cm
area of cylinder=2Πr(r+h)
=2(22÷7)×14(14+35)
=88×49
=4312cmsq.
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