Question

what is the area of canvas required to make a conical sirface tent with height 5m and radius of base 12m

Answer 1

Curved Surface Area of a Cone is $\pi$.raduis.slant height(l) (not TSA coz we're not involving the base).
So, l² = h²+r²
         ⇒ 5²+12²
         ⇒ 169
l= 13
Now, put the formula, 22/7×12×13 = 490.28m²