Question

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Answer 1

Explanation:

Given,

Length= 4/3 x

Breadth= x

Perimeter=2(l+b)

55=2(4x/3+x)

55=8x/3+2x

55=(8x+6x)/3

55=14x/3

55×3=14x

165=14x

165/14=x

x=11.78

Hence,

Breadth=x=11.78

Length=4x/3=(4×11.78)/3=15.7067

Answer 2

`\\ \sf\longmapsto 2(L+B)=55`

`\\ \sf\longmapsto 2((4)/(3)x+x)=55`

`\\ \sf\longmapsto (8)/(3)x+2x=55`

`\\ \sf\longmapsto (8x+6x)/(3)=55`

`\\ \sf\longmapsto (14x)/(3)=55`

`\\ \sf\longmapsto 14x=165`

`\\ \sf\longmapsto x=11.78`

`\\ \sf\longmapsto x\approx 12`

Now

• B=x=12
• L=4/3(12)=4(4)=16