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The height of a right circular cylind...

The height of a right circular cylinder is 6 m. If three times the sum of the areas of its two circular faces is twice the area of the curved surface, then the radius of its base is (a) 1 m      (b) 2 m      (c) 3 m      (d) 4 m

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RS AGGARWAL-VOLUME AND SURFACE AREAS-All Questions
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