right circular cone radius is equals to 8 cm height is equals to 15 cm find the TSA of the cone find upto two decimal
Answers
Answered by
1
Answer:
When two cones of same base are joined together, the surface of the shape formed will only have the curved surfaced areas visible.
We know that curved surface area of a cone =πrl where r is the radius of the cone and l is the slant height.
As both the cones have the same base and height, they are identical and their curved surface areas are equal.
Hence, surface area of this shape =Curved surface area of Cone 1 +Curved surface area of Cone 2=2×(πrl)
Given, r =c cm and h =15 cm
⇒l=r2+h2=82+152=64+225=17 cm
Surface area of this shape =2×(πrl)=2×722×8×17≅855cm2
Answered by
1
Answer:
13.25 cm
Explanation:
Similar questions