a paper box without a lead is 25/100 m long , 16/100 m wide and 5/100m deep how many square CM of paper have been used to make the box
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Length of SQ. box= 25 cm
Width= 16 cm
Depth= 5 cm
Area of rectangle 1= 25×5
= 125 cm2
Area of rectangle 2= 25×5
=125 cm2
Area of rectangle 3= 16×5
=80 cm2
Area of rectangle 4= 16×5
=80 cm2
Area of rectangle 5= 16×25
=400 cm2
Total area of paper box= 400+80+80+125+125 = 810 cm2
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