Question

the area of a square field is 5184 metre square a rectangular field whose length is twice its breadth has its perimeter equal to the perimeter of the square feet find the area of the rectangular field

Answer 1

Area of square field = 5184m^2
Square root of 5184 = 72m 
Therefore perimeter of square field = 4 * 72 = 288m
Rectangular field.
Breadth = x
Length = 2x
Perimeter = 2*length + 2*breadth
= 2(2x) + 2(x)= 6x
Perimeter of rect field = Perimeter of square field.
6x = 288m
x = 48m
Breadth of rectangular field = 48m
Length of rectangular field = 96m.

Answer 2

HELLO DEAR!!!

Here's your answer.....

The area of square field is 5184

The side of square is 

s^2=5184
s=72cm

The rectangular field whose length is twice its breadth.

Perimeter of square=Perimeter of rectangle

Perimeter of square = 4s
                                 =4(72)
                                 =288

Perimeter of rectangle is 288

Let,

The breadth of rectangle be x
The length of rectangle be 2x

Perimeter of rectangle= 2(l+b)
                                   =2(2x+x)
                            288=2(3x)
                          288= 6x
                          288/6 = x
                          48=x

length of rectangular field= 2x
                                        =2(48)
                                        =96

breadth of rectangular field=x
                                          =48

Area of rectangular field = l*b
                                       =96*48
                                       =4608m^2

The area of rectangular field is 4608 m^2
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Hope this helps you.........