Question

in exchange of the square plot whose side is 84m a man wants to buy a rectangular plot 144m long and of the same area of the square plot find width of the rectangular plot

Answer 1

84×84=144×width
width=49m

Answer 2

Side of square plot = 84m

Length of rectangle = 144m

Area of Rectangle = Area of Square

Length ×Breadth = side ×side

144 ×B = 84 ×84

$b = \frac{84 \times 84}{144} \\ b=7 \times 7 = 49$