anonymous
  • anonymous
how many square meters of canvas is required for a conical tent whose height is 3.5 m and radius of whose base is 12m?(pie=22/7)
Mathematics
katieb
  • katieb
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katieb
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anonymous
  • anonymous
in detail i want d answer
anonymous
  • anonymous
?????????????????????????????
anonymous
  • anonymous
area of canvas required = Curved Surface Area of the cone CSA of cone = π*r*l so we first need to find l l = sqroot(r^2 + h^2) = sqroot[(12m)^2 + (3.5m)^2] = sqroot[ 144 m^2 + 12.25 m^2]

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mihai
  • mihai
471 square meters
anonymous
  • anonymous
l = 12.5 m so CSA = 22/7 * 12m * 12.5 m = 471.43 sqmtr
anonymous
  • anonymous
thxs to alllllllllllllllll
anonymous
  • anonymous
answer is 471.4
anonymous
  • anonymous
Hmm don't we consider the base?
anonymous
  • anonymous
@vengeance921 we r not given that the base is also canvas. for the language above we just need to find the CSA
anonymous
  • anonymous
True, thanks.
anonymous
  • anonymous
Thanks, except for adding the base your calc was also right
anonymous
  • anonymous
u hav done dat knw and u deleted it
anonymous
  • anonymous
Yeah because I felt it's wrong so..

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