A 34m long and 18cm wide photo-frame is edged with a piece of wood of 2cm width. Find the cost of edging at the rate of Rs. 5 per sq cm.
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Answer:
total length of frame=34+2=36m
total width of frame=18+2=20m
area of frame=36*20=720m sq
1m=100cm so,720m=72000cm
cost of edging=72000*5=360000rRs
or
perimeter of frame=36+36+20+20=112m=11200cm
cost=11200*5=56000
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