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The given figure shows a tent in the shape of acylinder surmounted by a conical top. If theheight and the diameter of the cylindrical partare 2.1 m and 4 m respectively, and the slantheight of the top is 2.8 m, find the area of thecanvas used for making the tent. Also, find thecost of the canvas of the tent at the rate of22Rs 600 per square metre. |
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Answer» Answer: 22000 rupees Step-by-step EXPLANATION: Given: Height (h) of the cylindrical PART = 2.1 m Diameter of the cylindrical part = 4 m Radius of the cylindrical part = 2 m Slant height (l) of conical part = 2.8 m Area of canvas used = CSA of conical part + CSA of cylindrical part =πrl+2πrh =π×2×2.8+2π×2×2.1 =2π[2.8+4.2] =2×722×7 =44m2 COST of 1 m 2 canvas =500 rupees Cost of 44 m 2 canvas =44×500=22000rupees. Therefore, it will cost 22000 rupees for making such a tent. |
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