Question

the length of a rectagle is 5 in longer than its width. if the perimeter of the rectangle is 56 in, find its length and width

Answer 1

Width: 11.5 inches; Length: 16.5 inches

Explanation:

Let l=length and w=width

l=w+5

2(w+5)+2w=56

4w=46

w=11.5, l=16.5

Answer 2

• Length = 16.5 inches

• Width = 11.5 inches

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Step-by-step explanation :

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As it is given that, the length of a rectangle is 5 in longer than its width and the perimeter of the rectangle is 56 in and we are to find the length and width of the rectangle. So,

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Let us assume the width of the rectangle as x inches and therefore, the length will be (x + 5) inches .

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Now, According to the Question :

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`{\longrightarrow \qquad { \pmb{\frak {2 ( Length + Breadth )= Perimeter_((Rectangle)) }}}}`

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`{\longrightarrow \qquad { {\sf{2 ( x + 5 + x )= 56 }}}}`

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`{\longrightarrow \qquad { {\sf{2 ( 2x + 5 )= 56 }}}}`

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`{\longrightarrow \qquad { {\sf{ 4x + 10= 56 }}}}`

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`{\longrightarrow \qquad { {\sf{ 4x = 56 - 10}}}}`

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`{\longrightarrow \qquad { {\sf{ 4x = 46}}}}`

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`{\longrightarrow \qquad { {\sf{ x = (46)/(4) }}}}`

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`{\longrightarrow \qquad{ \underline{ \boxed { \pmb{\mathfrak {x = 11.5}} }}} }\: \: \bigstar`

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Therefore,

• The width of the rectangle is 11.5 inches .

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Now, We are to find the length of the rectangle:

`{\longrightarrow \qquad{ { \frak{\pmb{Length = x + 5 }}}}}`

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`{\longrightarrow \qquad{ { \frak{\pmb{Length = 11.5 + 5 }}}}}`

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`{\longrightarrow \qquad{\underline{\boxed { \frak{\pmb{Length = 16.5}}}}}} \: \: \bigstar`

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Therefore,

• The length of the rectangle is 16.5 inches .

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