The height of a cone is 20m and its base
radius is 50cm - Find the curned surface
area and the total surface area
of the cone.
Share
The height of a cone is 20m and its base
radius is 50cm - Find the curned surface
area and the total surface area
of the cone.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
given height= 20cm ,
base radius = 50cm ,
To find: CSA of cone and TSA of cone
Solve : CSA of cone = πrl
= 22\7 x 50 x 20
3142.8..cm2
and TSA of cone = πr(l+r)
= 22\7 x 50 ( 20+50 )
= 22\7 x 50 ( 70)
= 1100cm2
this is the final answer.!
Answer:
Step-by-step explanation:
Given that :
To find :
Solution :
First, we have to find the slant height (l).
Slant height =
⇒ l =
⇒ l =
⇒ l =
⇒ l = 20 m (approx)
We know that,
CSA of cone = πrl
= * 0.5 * 20
=
= 31.5 m² (approx)
Also,
TSA of cone = πr (l + r)
= * 0.5 ( 20 + 0.5 )
= * 10.25
=
= 32.3 m² (approx)
Hence,