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surface area of the cylinder obtained by putting 20 such plates one above the other. 115 conical tents with diameter 8 m and height 3 m each are to be prepared from cloth 2m wide Find how many metres of cloth will required. (* = 3.14) 13. The curved surface area of a cone is 850 cm and its slant height is 20 cm. Find the diameter of the come 175.m andits radius is 4 cm. Find the slant

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