Mensuration

Surface areas of solid cylinder Curved surface area = 2πrh, where r and h are the radius and height Total surface area = 2πr (r + h), where r and h are the radius and height

Example :

What is the curved surface area of a cylinder of radius 2 cm and height 14 cm?

Solution:

Curved surface area of cylinder = 2πrh

Surface areas of hollow cylinder Curved surface area = 2πh (r + R), where r, R and h are the inner radius, outer radius and height Total surface area = CSA of outer cylinder + CSA of inner cylinder + 2 × Area of base= 2π (r + R) (h + R – r), where r, R and h are the inner radius, outer radius and height

Surface areas of cone Curved surface area = πrl, where r and l are the radius and slant height Total surface area = πr (l + r), where r and l…To view the complete topic, please