# The height of a right circular cylinder is 8 cm. Four times the sum of the area of its two circular faces is twice the area of its curved surface. The radius of the base is

 [ A ]    3 cm [ B ]    4 cm [ C ]    5 cm [ D ]    1.5 cm
 Answer : Option B Explanation : According to the question,4 x 2$\pi$ $r^2$= 2 x 2$\pi$ r $\times$ 8So,r = 4 cm