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Mathematics 7 Online
OpenStudy (anonymous):

An open box is made by cutting the congruent squares from the corner of rectangular sheet of 20*15 cm. If side of each square=2 cm, the total outer surface area of box??

OpenStudy (radar):

You need to visualize this. Maybe this drawing will help.|dw:1425559972590:dw|

OpenStudy (radar):

|dw:1425560145536:dw|

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