Question

the boundary of a rectangular park is 60m .if the breadth is 10m.find its length.

Answer 1

perimeter of rectangle=2(l+B)
60=2(l+10)
60=2l+20
60-20=2l
40=2l
l=40/2
l=20
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Answer 2

hello users ....

Solution:-
we know that:
perimeter of rectangle = 2*(L + B)

where, L is the length and B is the breadth of rectangle .

Here,
Given that ;
breadth (B) of rectangle = 10 m
And
perimeter of rectangle = 60 m 

=> 2 * ( L + B ) = 60 m

=> 2*( L + 10 ) = 60 m

=> (L + 10) = 60 / 2 m 

=> ( L + 10 ) = 30 m 

=> L = 30 - 10 = 20 m Answer 

# Hope it helps :)