Question

the length,breadth and height of a cuboid are in the ratio 7:6:5. if the surface area of the cuboid is 1926,find its dimensions and the volume of the cuboid .

Answer 1

Answer:

Step-by-step explanation:

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let l=7x b=6x h=5x   

S.A. of cuboid=2[lb+bh+hl]

1926=2[7x × 6x + 6x × 5x + 5x × 7x]

1926=2[42x^2+30x^2+35x^2]

1926=2X107x^2

107x^2=1926/2=963

x^2=963/107=9

x=3

V=21X18X15=5670cm^3

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