Question

The family built a house that has a length and width in a ratio of 5: 4, what is the length and width of the house if the total area of ​​two identical floors is 160m2

Answer 1

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Step-by-step explanation:

As given that

L:W=5:4

L/W=5/4

L=(5/4)W

hence we also know that

Area of rectangle= L*W

As given A=160m2

putt the value of A and L=(5/4)W in above equation ,

hence 160 = (5/4)W * W

W^2 = 160*4/5

W^2 = 32*4

W^2=128

taking square root

W= +_ 11.3

but length can't be negative so we take positive value of W

W=11.3 m

Now for L putt in above equation,

L=5/4 * 11.3 = 14.12 m