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A plastic 1.5 m long,1.25 m wide and 65 cm deep is to be made .it is opened at the tap. Ignoring the thickness of the plastic sheet,determine:

Posted by Nikhil Rajput 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Nikhil Rajput 7 years, 10 months ago

Given length of the box =1.5 m Breadth of the box =1.25 m Height of the box =65 cm =0.65 m =2 (l+b)×h+lb =2 ( 1.5 +1.25 )×.65+1.5×1.25 =3.575+1.875 =5.45 m2 =20×5.45=109.

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