Pragya donates toys to children of a nominee to the occasion of her birthday is toy is in shape of a cone mounted on a hemisphere of common base radius 7 centimetre the total height of the toy is 31 CM find the total surface area of the toy Also find the cost of 50 such toys if the cost of material used for colouring the toy is 5 per 100 cm and cost of manufacturing is 10 rs per day
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