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 right
[ 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 $\times$ 8

So,r = 4 cm

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