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IL level in 500 rotations The diameter of a circular plate i 28 om and its thickness is 2.5 cm. Find the total surface area of the cylinder obtained by putting 20 such plates one above the other. 5 conical tents with diameter 8 mand height 3 m each are to be prepared from cloth 2m wide. Find how many metres of cloth will required. (* = 3.14) f arofa conei 80 cm and its slant height is 20 cm. Find the

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