Length and breadth of a prayer hall is 19 m and 17 m respectively. A carpet is fixed in it. A stripe is knitting surrounding the carpet. Find the cost at the rate of Rs.30 per 1 meter.
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Area of the rectangular prayer hall =( l×b) =19 ×17=323 meters the cost a meter carpet =rs 30 so the cost of the of the knitting in hall surrounding =323 ×30=rs9690
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