Question

If the diameter of the base of a closed right circular cylinder be equal to its height h, then its whole surface area is

A. 2πrh²

B. \(\cfrac32\)πh²

C. \(\cfrac43\)πh²

D. πh²

Answer 1

Correct answer is B. \(\cfrac32\)πh²

Given,

Diameter of cylinder = height of cylinder

2r = h or r = \(\cfrac{h}2\) 

Total surface area of cylinder = 2πr(h + r)