how i find this surface area,cause i dont understand how find heigh of sylinder?

Question

anonymous · Answer

attachment

anonymous · Answer

Oh, is the cone on top included or just the cylinder of radius 7 cm and height 31 cm?

anonymous · Answer

include...
31 cm is not heigh of sylinder

amistre64 · Answer

without knowing anything about the thing on top; your best solution will remain in a general form

anonymous · Answer

Yes, thank you, amistre64. sh2 needs one more dimension to determine height of individual cylinder and cone.

anonymous · Answer

i have this from mybook...no trouble with this, that 31 is totally heigh of sylinder and cone

anonymous · Answer

With out knowing the something about the cone or some other dimension you can't tell the height of either and it matters if you want an number solution, with no variables. |dw:1349112015298:dw|