Question

pls anser make it fast​

Answer 1

Answer:

length=15 cm

bredth=12cm

Step-by-step explanation:

ratio=5:4

let these be 5x and 4x.

perimeter=2(L+B)

PERIMETER=2(5X+4X)

2(9x)=54

18x=54

x=54/18=3

so, 5x=15cm

4x=12 cm

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Answer 2

Answer:

Length = 15 cm and Breadth = 12 cm

Step-by-step explanation:

Let Length = 5x cm and breadth = 4x cm

Now, Perimeter = 54 cm (Given)

According to the problem,

2*(l+b) = Perimeter

or, 2*(5x+4x) = 54

or, 2*(9x) = 54

or, 18x = 54

or, x = 54/18 = 3

Hence, Length = [5*3] = 15 cm and, Breadth = [4*3] = 12 cm.

Hope you Get it!!!!!!