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The length of a rectangular hall is 4 metres less than 3 times the breadth of the hall. What is the length, if the breadth is \( b \) metres?
Given:
The length of a rectangular hall is 4 metres less than 3 times the breadth of the hall.
Breadth of the hall$=b$ m.
To do:
We have to find the length of the hall.
Solution:
Length of the hall$=3\times b-4$ m
$=3b-4$ m.
Therefore, the length of the hall is $3b-4$ m.
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