Surface Area of a truncated cone

surface area truncated cone1

R14 red - radius of the lower base

rr1 red - radius of the upper base

L14 blue - slant height of a cone

pi1 3,14

Calculate the lateral surface area of a truncated cone if given radius and slant height ( A_{_lat} ) :

surface area truncated cone F1

Calculate the total surface area of a truncated cone if given radius and slant height ( A ) :

surface area truncated cone F2