A cylinder of base radius 4cm is open at one end. If the ratio of the area of its base to that of its curved surface is 1:4, calculate the height of the cylinder

A. 1cm

B. 2cm

C. 4cm

D. 8cm

E. 16cm

Correct Answer: Option D

**D. 8cm**

Explanation

r= 4cm; base area = πr2; Curve S.A = 2πrh

baseareacurvedarea = 1/4; π/2πrh

=h = 4x4cm2

h= 8cm

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