A picture is painted on a cardboard 10cm long 8cm wide leaving the margin of 2.5 cm along each of side find the total area of margins
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length of cardboard=10 cm
breadth of cardboar=8 cm
width 9 margin=2.5cm
length of margin=10-2.5-2.5=5 cm
width of margin=8-2.5-2.5=3 cm
area of margin=5×3=15 cm
breadth of cardboar=8 cm
width 9 margin=2.5cm
length of margin=10-2.5-2.5=5 cm
width of margin=8-2.5-2.5=3 cm
area of margin=5×3=15 cm
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