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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Step-by-step explanation:
l = 10 cm
b = 8cm
L = 10+1.75 =11.75
B = 8+ 1.75 = 9.75
area of margin = total area - area of poster
= 11.75*9.75 - 10*8
= 114.5625 - 80
= 34.5625 sq cm
rate of cardboard = 0.60 per sq cm
cost of cardboad = total area * rate
= 114.5625* 0.60
= 68.737500 rs
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