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.3/2 πh²
C.4/3 πh²
D. πh²

Answer 1

Answer:

ans.B

Step-by-step explanation:

d=h

so, r=h/2

surface area of cylinder = 2πr^2h

= 2πh/2(h/2+h)

=3πh^2/2

Answer 2

Answer:

B. 3/2πh²

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