Question

the sides of a rectangle are in the ratio 5: 4 and it perimeter is 90cm . Find its length and breadth
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step by step explanation
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Answer 1

Answer:

Answer:

Its length and breadth are 25 cm and 20 cm respectively.

Step-by-step explanation:

The sides of a rectangle are in the ratio 5:4

Let the ratio be x

so, Length = 5x

Breadth = 4x

Perimeter of rectangle = 2(l+b)

                                     = 2(5x+4x)

                                     = 2(9x)

Now we are given that its perimeter is 90 cm

So, 2(9x)=90

18x=90

x=\frac{90}{18}

x=5

So, Length = 5x = 5 \times 5 = 25cm

Breadth = 4x= 4\times 5 =20cm

Hence its length and breadth are 25 cm and 20 cm respectively.

Answer 2

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