A picture is painted on a wall is painted on a cardboard 8 cm long and 5 cmwide such that there is a margin of 1.5 CM along each of its sites sides find the total area of themargin ?
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L = 8cm
B= 5 cm
l = 8 - 1.5 = 6.5
b = 5- 1.5 = 3.5
area of margin = total area of cardboard -- area of picture
= 8*5 - 6.5*3.5
= 40 - 22.75
= 17.25 sq cm
B= 5 cm
l = 8 - 1.5 = 6.5
b = 5- 1.5 = 3.5
area of margin = total area of cardboard -- area of picture
= 8*5 - 6.5*3.5
= 40 - 22.75
= 17.25 sq cm
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