Question

if the diameter of the base of the closed right circular cylinder be equal to the height find the total surface area of the cylinder

Answer 1

Total Surface Area = 2 π r (h+R)
Let, diameter =height
radius=diameter/2,therefore,radius=height/2[d=h]
=2π h/2(h+h/2)
=πh x 3h/2
=3πh​2/2