heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m it has to be covered by canvas to protect it from rain find the area of the canvas
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diameter = 10.5m , radius = 5.25 , height = 3m
the area of canvas required is nothing but its curved surface area
csa of cone = πrl
where r is radius and l is slant height
l^2 = r^2 + h^2
l ≈ 6m
so area of canvas required = 22×5.25×6/7
= 99
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