A-solid-cone-of-height-56cm-and-a-basem-diaeter-of-56cm-is-formed-from-al-cylindrica-drum-equal-in-height-andt-diameer-with-the-cone-Find-the-surfacee-ara-of-the-remaining-part-of-the-drum-if-the

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Question Number 180191 by cherokeesay last updated on 08/Nov/22

$$$$$$\mathrm{A}\mathrm{solid}\mathrm{cone}\mathrm{of}\mathrm{height}56\mathrm{cm}\mathrm{and}\mathrm{a}\mathrm{basem}$$$$\mathrm{diaeter}\mathrm{of}56\mathrm{cm}\mathrm{is}\mathrm{formed}\mathrm{from}\mathrm{al}$$$$\mathrm{cylindrica}\mathrm{drum}\mathrm{equal}\mathrm{in}\mathrm{height}\mathrm{andt}$$$$\mathrm{diameer}\mathrm{with}\mathrm{the}\mathrm{cone}.\mathrm{Find}\mathrm{the}\mathrm{surfacee}$$$$\mathrm{ara}\mathrm{of}\mathrm{the}\mathrm{remaining}\mathrm{part}\mathrm{of}\mathrm{the}\mathrm{drum}.$$$$$$$$(\mathrm{if}\mathrm{the}\mathrm{answer}\mathrm{is}\mathrm{accompanied}\mathrm{by}\mathrm{a}$$$$\mathrm{diagramit}\mathrm{will}\mathrm{be}\mathrm{perfect}\mathrm{and}\mathrm{I}\mathrm{thank}\mathrm{youo}$$$$\mathrm{fr}\mathrm{it}).$$

Answered by Acem last updated on 09/Nov/22

$$Asigotthatweformedaconefrom$$$$acylindricdrum\dots right?atthiscasethesurface$$$$consistsofthreesurfaces:$$$$upperbase,externalsideandinternalone$$$$S=0.25\pi D^2+\pi Dh+0.5\pi D\sqrt{0.25D^2+h^2}$$$$S=\pi D(0.25D+h+0.25\sqrt{D^2+4h^2})$$$$S\approx 1.782m^2$$$$$$

Commented by Acem last updated on 08/Nov/22

Commented by Acem last updated on 08/Nov/22

$$Butwithturningmachinenothingremainsbut$$$$ironfilings$$$$$$

Commented by cherokeesay last updated on 09/Nov/22

$$thankyousomuchsir.$$

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