Answer :

__Given__ : Diameter of paddy = d = 4.2 m

Height of paddy = h = 2.8 m

__To find__ : Area of canvas needed to cover paddy = ?

__Formula__ : l =

CSA of cone = rl

__Solution__ : radius of paddy = r = = = 2.1 m

l = = = = = 3.5 m

Area of canvas needed = CSA of cone = rl = × 2.1 × 3.5 = 23.1 m^{2}

∴ Area of canvas needed to cover the paddy is 23.1 m^{2}.

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