Question

the surface area of a cuboid is 1372 square centimetre if its dimensions are in the ratio 4 ratio 2 ratio 1 then find its length

Answer 1

Let the length be 4x

Let the breadth be 2x

Let the height be x

Surface area=2(lb+bh+hl)

=2(8x²+2x²+4x²)

=28x²=1372

so x²=49

and x=7

So length=4x=28cm

breadth=2x=14cm

&. height=x=7cm

I hope the above solution will help you...

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