1.

c maniaof the mazen

Answer»

Length (l) of cardboard = 8 cmBreadth (b) of cardboard = 5 cm

Area of cardboard including margin = l × b = 8 × 5 = 40 cm2

From the figure, it can be observed that the new length and breadth of the cardboard, when margin is not included, are 5 cm and 2 cm respectively.

Area of the cardboard not including the margin = 5 × 2 = 10 cm^2

Area of the margin = Area of cardboard including the margin − Area of cardboard notincluding the margin= 40 − 10 = 30 cm^2



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