Question:
Total surface area of a cylinder of radius h and height r is_______ .
Solution:
2πh(r+ h)
Given, radius of cylinder = h and height of cylinder = r
...Total surface area of a cylinder = Curved surface area + Area of top surface + Area of base
= 2 x π x Radius x Height + π (Radius)2+ π (Radius)2
= 2πhr+ πh2 + πh2
= 2πrh + 2πh2
= 2πh(r + h)