A poster of size 10 cm by 8cm is posted on a sheet of cardboard such that there is a margin of width 1.75 cm 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 Rs 1.80 per cm ?
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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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