Question

FFind the length of a rectangular Park whose area is equal to square metre and breadth is kilometre

Answer 1

Step-by-step explanation:

Here, Length of Rectangular Park =l

Breadth of Rectangular Park =l−3

Altitude of Triangular Park =12

Breadth of Triangular Park =l−3

Now,

A

Rectangle

=l(l−3)

A

Triangle

=

2

1

×12(l−3)

A

Rectangle

−A

Triangle

=4

⇒l(l−3)−

2

1

×12(l−3)=4

⇒l

2

−9l+14=0

⇒(l−2)(l−7)=0⇒l=2,7

Since, breadth is l−3 , l



=2

∴l=7 m and breadth =7−3=4 m