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Question

Monica has a piece of canvas whose area is 551 m2.She uses it to have a conical tent made,with a base radius of 7 m.Assuming that all the stitching margins and wastage incurred while cutting,amounts to approximately 1 m2.Find the volume of the tent that can be made with it.


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Solution

Area of canvas=551 m2Area of wastage=1 m2Actual area=5511=550 m2Base radius of the conical tent=7 m

Let l be the slant height and h be the vertical height,then slant height (l)=Areaπr=550×722×7=25 m Vertical height (h)=l2r2=25272m=62549=576m=24 mNow volume of the tent=13πr2h=13×227×7×7×24 m3=1232 m3


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