20. A table top is 9 dm 5 cm long and 6 dm 5 cm broad. What will be the cost to polish it at the rate
of 20 paise per square centimetres
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1 dm is equal to 10 cm so 9 dm is equal to 90cm and is 5 cm also so total is 95cm .and 6 dm 5 cm is equal to 65 cm. by saying is length and breadth it is looking like a rectangle. show its area equal to length into breadth.
=95(65)
=6175 cm square
cost of polishing 1 centimetre square is equal to 20 paisa
cost of polishing 6175 CM square is equal to
20(6175)paise
=1,23,500paise
in rupees is 123500 divided by 60
2058.3 rupees
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