Question

the length and height of a cuboid are is ratio 3:4:5 and its volume is 7500cm3 find its sides

Answer 1

Answer:

1875cm, 2500cm and 3125cm

Step-by-step explanation:

Let the sides be 3x, 4x, 5x

Total sides= 3x+4x+5x

=12x

7500cm^3=12x

=>x=7500/12

x=625

So, we know the common factor is 625

So, we can multiply= 3(625),4(625),5(625)

=1875,2500,3125

So, the sides are 1875cm, 2500cm and 3125 cm

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Answer 2

Answer:

• lenght : 15cm
• breadth : 20cm
• height : 25cm

Step-by-step explanation:

• volume of cuboid : l× b× h
• =(3x)×(4x)×(5x)
• =60x
• 60x ÷(3+4+5)
• 60x ÷ 12
• x=5

1st side = 5×3 = 15cm

2nd side = 5×4=20cm

3rd side =5×5=25cm