Question

The length , breadth and height of a rectangular solids are in the ratio of 5 : 4 : 2 if the total surface area is 1216 cm square, Find the length, breadth and height of the solid

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Given,
Length:Breadth:Height= 5:4:2

Let the ratios be 5x, 4x, 2x.
Therefore, 2(5x*4x+5x*2x+4x*2x)= 1216
= 2(20x^2+10x^2+8x^2)= 1216
= 40x^2+ 20x^2+16x^2= 1216
=76x^2= 1216
=x^2=1216/76
$x = \sqrt{16}$
$x = 4$
So the value of 'x' is *4*
:. 5*x= 5*4 =20
4*x= 4*4= 16
2*x= 2*4= 8
Therefore... the answer is here..

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