Question

the length of a rectangular playground is 9 more than twice its breadth.if the perimeter of the ground is 90m,then find the length and breadth of the playground​

Answer 1

Step-by-step explanation:

let the breadth be X

and the length be 9+2x

the perimeter=90

2.(9+2x+X)=90

3x+9=90/2

3x=36

X=12

breadth=12

length=33

Answer 2

Answer:

l = 12 m

b = 33 m

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Step-by-step explanation:

let the length be x then the breadth is 9 + 2x

perimeter = 90 m

perimeter = 2( l + b)

perimeter = 2 ( x + 9 + 2x)

perimeter = 2x + 18 + 4x

90 m = 6x + 18

90 - 18 = 6x

72 m = 6x

x = 72/6

x = 12

length = 12 m

breadth = 9 + 2 * 12

             =  9 + 24

             = 33 m