a poster of size 10 cm by 8 cm is pasted on a sheet of cardboard such that there is a margin of width 1.75 CM along side of the poster find (1) the total areA of the margin (2) the cost of the cardboard used at the rate re 0.60 per cm2
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the poster is of 10 and 8 cm
so the cardboard will be 11.75 and 9.75 cm (as said in the q)
area of cardboard -area of poster=area of margin
area of cardboard=11.75*9.75
=114.5625
area of poster = 10*8
=80
=114.5625-80=34.5625
the cost of the cardboard=114.5625/0.60=190.9375
or around 191 rupees
so the cardboard will be 11.75 and 9.75 cm (as said in the q)
area of cardboard -area of poster=area of margin
area of cardboard=11.75*9.75
=114.5625
area of poster = 10*8
=80
=114.5625-80=34.5625
the cost of the cardboard=114.5625/0.60=190.9375
or around 191 rupees
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