Question

the height of wall is five times its width and its length is eight times its height. if volume of the wall is 12.8m^3,Find it's length

Answer 1

let the width of the wall be x
And height of the wall =5x
length of wall =8×5x=40x
volume of cuboidal wall
L×B×H=12.8
x×5x×40x=12.8
200x^3=12.8
x^3=12.8/200
x^3=6.4/100
x^3=64/1000
x=4/10
x=0.4m
length of wall 40x=40×0.4=16m

Answer 2

Answer:

hope this helps

Step-by-step explanation:

let the width of the wall be x

And height of the wall =5x

length of wall =8×5x=40x

volume of cuboidal wall

L×B×H=12.8

x×5x×40x=12.8

200x^3=12.8

x^3=12.8/200

x^3=6.4/100

x^3=64/1000

x=4/10

x=0.4m

length of wall 40x=40×0.4=16m