Question

the length of rectangular field is 30 m more than its breath . if the perimeter is 640 m . find find the length of the field.

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Answer 1

Let the breadth be x then the length will be x+30

and given perimeter is 640m.

/Formula of the perimeter =  2(l+b)

=>2(x+x+30) = 640

=> 2 (2x + 30) = 640

=> 4x + 60 = 640

=> 4x = 640 - 60

=> 4x = 580

=> x = 580 / 4

=> x = 145  

145 m is the breadth of the given rectangular field. And the length of the given rectangular field is 175 m .

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Answer 2

Answer:

Length of field = 175

Step-by-step explanation:

perimeter of field =2(L+B)

Put values

640=2(30+x +x)

640/2=30+2x

320=30+2x

320-30=2x

290=2x

290/2=x

145=x

Length = 145+30

=175