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)

Question

anonymous · Answer

in detail i want d answer

anonymous · Answer

?????????????????????????????

anonymous · Answer

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]

mihai · Answer

471 square meters

anonymous · Answer

l = 12.5 m
so
CSA = 22/7 * 12m * 12.5 m = 471.43 sqmtr

anonymous · Answer

thxs to alllllllllllllllll

anonymous · Answer

answer is 471.4

anonymous · Answer

Hmm don't we consider the base?

anonymous · Answer

@vengeance921
we r not given that the base is also canvas.  for the language above we just need to find the CSA

anonymous · Answer

True, thanks.

anonymous · Answer

Thanks, except for adding the base your calc was also right

anonymous · Answer

u hav done dat knw
and u deleted it

anonymous · Answer

Yeah because I felt it's wrong so..