A brass tray is in shape of a parallelogram was polished at a total cost of Rs2250 at the rate of Rs20 per 10cm. If the altitude of pallellogram is 45 cm, find the length of its base
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rate = 20/10 = 2rupees per centimetre
area of parallelogram = 2250/2= 1125cm
area of parallelogram = length x altitude
1125= 45 x length
length= 1125/45 =25 cm
area of parallelogram = 2250/2= 1125cm
area of parallelogram = length x altitude
1125= 45 x length
length= 1125/45 =25 cm
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