The altitude of a circular cylinder is increased six times and the base area is decreasedone-ninth of its value. The factor by which the lateral surface of the cylinder increases, is

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Q. The altitude of a right circular cylinder is increased six times and the base area is decreased to one-ninth of its value. The factor by which the lateral surface increases is _________.

Q. The altitude of a circular cylinder is increased six times and the base area is decreased one-ninth of its value. The factor by which the lateral surface of the cylinder increases, is

(a)

\frac{2}{3}

(b)

\frac{1}{2}

(c)

\frac{3}{2}

(d) 2

The altitude of a circualr cylinder is increased six times and the base area is decreases to one-ninth of its value. The factor by which the lateral surface of the cylinder increases, is

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21 c m

. The diameter of the base is

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