Answer:

4b-7 m

Step-by-step explanation:

Breadth of the hall = b

Lenght of the hall = 4b-7 m

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Given :

• Breadth of the Rectangle is "b" m .
• The length of the hall is 7 metres less than 4 times the breadth .

[tex] \\ \\ [/tex]

To Find :

• Find the Length

[tex] \\ \qquad{\rule{200pt}{2pt}} [/tex]

[tex] \dag [/tex] Calculating the Length :

[tex] \longmapsto [/tex] The Breadth is b cm .So :

[tex] \qquad \; {\pmb{\sf{ Breadth = b \; m }}} [/tex]

[tex] \\ [/tex]

[tex] \longmapsto [/tex] Length is 7 m less than 4 times the Breadth .So :

[tex] \qquad \; {\underline{\boxed{\pmb{\sf{ Length = 4b - 7 \; m }}}}} \; {\red{\pmb{\bigstar}}} [/tex]

[tex] \\ \\ [/tex]

[tex] \therefore \; [/tex] Length of the Rectangle is 4b - 7 m .

[tex] \\ \qquad{\rule{200pt}{2pt}} [/tex]