Question

the area of the amita's rectangular land is 20000sq.m. and perimeter of it is 180m..By calculating,let us write the length and breadth of the amita's land​

Answer 1

Answer:

40000=180x-2x²

Step-by-step explanation:

AREA=20,000m²

PERIMETER = 180m

LET THE LENGTH BE x AND BREADTH BE y

SO,

xy=20,000m²      (e.q. 1)

2(x+y) = 180          (e.q. 2)

NOW,

IN EQUATION 1,

xy=20,000

y=20,000/x

NOW,

SUBSTITUTING THE VALUE FOR y IN EQUATION 2

WE GET,

2(x+y) = 180

2(x+20000/x) = 180

2x+40000/x = 180

40000/x=(180-2x)

40,000=x(180-2x)

40,000 = 180x-2x²

I HOPE YOU UNDERSTOOD THE QUESTION!!!