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A cuboidal box has total surface …

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A cuboidal box has total surface area of 800m square,lateral surface area is 300m square, then find the area of the base

Posted by Madhav Kalia 8 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Manish Gandhi 8 years, 9 months ago

TSA for Cuboid = 2 (lb + bh + lh) = 800m square (given)

LSA for Cuboid = 2 (lh + bh) = 300m square (given)

Now, TSA - LSA = 2 (lb + bh + lh) - 2 (lh + bh) = 2lb

Also, TSA - LSA = 800 - 300 = 500m square

=> 2lb = 500 => lb = 500/2 = 250m square (Answer)

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CBSE > Class 09 > Mathematics