A truncated cone is a part of a cone located between its base and a secant plane parallel to the base.
The formula for the area of the entire surface of the cone
where R is the radius of the lower base,r is the radius of the upper base, L is the length of the generatrix.
A truncated cone is a part of a cone located between its base and a secant plane parallel to the base.
The formula of the area of the lateral surface of the cone
where R is the radius of the lower base,r is the radius of the upper base, L is the length of the generatrix.
Solution:
S = πL·(R+r)
= π·2000·(2000+2000)
= π·2000·4000
= 8000000·π
=
25132000
a: The area of the lateral surface of a truncated cone with the radius of the lower base R = 2000, with the radius of the upper base r = 2000, and the generative L = 2000 equal to 25132000