Question:The perimeter of a rectangular filed is`480` metres and the ratio between the length and breadth is`5 : 3.`The area of the field is : 

A `7200 m^2` 
B `15000 m^2` 
C `13500 m^2` 
D `54000 m^2` 

+ Answer
C 

+ Explanation
Let length = 5x breadth = 3x. Then,

`2 (5x + 3x)`

`= 480 or x = 30.`

:. length `= 150 m` & breadth` = 90 m.`

Area`= (150 xx 90) m^2`

`= 13500 m^2.`

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Irin Moni

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