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 cms along each side of the poster Find (i) the total area of the margin (ii) the cost of the cardboard used at the rate of the Rs 0.60 per cms^2

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In order to find the total cost of cardboard firstly find the area of poster by using the formula for area of rectangle then add it with the area of margin and finally multiplying the total area with the given cost per cm2.

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