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The given figure shows the cross section of a cone, a cylinder and a hemisphere all with diameter \( 10 \mathrm { cm } , \) and the other dimensions are as shown. Calculate: a) the total surface area, \( - 38.57 \mathrm { cm } ^ { 2 } \) b) the total volume of the solid. c) The density of the material if its total weight is \( 1.7 \mathrm { kg } \). \( 1.7 \times \) as

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