The length and width of a cuboid are in the ratio 3:4. If the height of the cuboid is 21 cm and its volume is 6300 cm3, complete the following statements.
The length of the cuboid is __ cm.
The width of the cuboid is __ cm.
Answers
Answered by
0
Answer:
let length of cuboid be 3x and breadth be 4x
volume of cuboid=lbh=3x×4x×21=6300
12x²=6300/21=300
x²=300/12
x²=25
x=25 only
so length=3x=3×25=75cm
breadth/widht=4x=4×25=100cm
Answered by
1
Answer:
the length is 15 cm.
the breadth is 20cm.
Step-by-step explanation:
Let the length be 3x and width be 4x.
volume of a cuboid = l*b*h
so, 3x*4x*21 = 6300cm3
12 = 6300/21
12 = 300
= 300/12
= 25
x = 25
x = 5cm
Hence, 3*5 = 15cm
4*5 = 20cm
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