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[" EXERCISE "13.9" (Optional) "^(*)],[" 1.A wooden bookshelf has external dimensions as "],[" follow.Ileight "=110cm" .Depth "=25cm" ."],[" Breadthe ss cin everywlere.The external faces "],[" are lo be polished ayt the inecternal faces "],[" painted.If the rate of polishing is "20" paise per "cm^(2)" ,"],[" find the the rate of painting is "70" paise per cim? "],[" find the total expenses required for polishing and "],[" painting the surfice of the bookshelf."]

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A wooden bookshelf has external dimensions as follows: Height =110 cm, Depth = 25 cm, Breadth = 85 cm. The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per cm^2 and the rate of painting is 10 paise per cm^2 .Find the total expenses required for polishing and painting the surface of the bookshelf.

A wooden bookshelf has external dimensions as follows : Height = 110 cm, Depth = 25 cm, Breadth = 85 cm (see the given figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per cm^(2) and the rate of painting is 10 paise per cm^(2) , find the total expenses required for polishing and painting the surface of the bookshelf.

A wooden bookshelf has external dimensions as follows: Height = 10 cm, Depth = 25cm, Breadth = 85 cm (See in Figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per c m^2 and the rate of painting is 10 paise per c m^2 . Find the total expenses required for polishing and painting the surface of the bookshelf.

A wooden bookshelf has external dimensions as follows: Height = 10 cm, Depth = 25cm, Breadth = 85 cm (See in Figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per c m^2 and the rate of painting is 10 paise per c m^2 . Find the total expenses required for polishing and painting the surface of the bookshelf.

A wooden bookshelf has external dimensions as follows: Height = 10 cm, Depth = 25cm, Breadth = 85 cm (See in Figure). The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per c m^2 and the rate of painting is 10 paise per c m^2 . Find the total expenses required for polishing and painting the surface of the bookshelf.

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