Q. 3 C5.0( 1 Vote )

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Answer :

Let the Length, breadth and height of the cuboid be 5x,4x

and 2x respectively.


Total Surface Area(TSA) = (LB+BH+LH) =1216


(LB+BH+LH) = 608


[(5x × 4x) +(4x × 2x) +(5x × 2x) =608


[20x2 +8x2+10x2] =608


38x2 = 608


x2 =


x2 = 16


x = 4


The dimension of the cuboid is:


Length = 5x= 5(4) = 20cm


Breadth = 4x=4(4) = 16cm


Height = 2x = 2(4) = 8cm


volume = (L×B×H)


Volume = 20 × 16 × 8


Volume = 2560cm2


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