Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m
Radius (r) = 
= 12 m
Slant height (l) = 21 m
TSA of cone = πr(r + l)
= 
* 12 (12 + 21)
= 
* 12 * 33
= 1244.57 m2
18
Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m
Radius (r) = = 12 m
Slant height (l) = 21 m
TSA of cone = πr(r + l)
= * 12 (12 + 21)
= * 12 * 33
= 1244.57 m2