Question

20. The area of square field is 3969m? A rectangular field, whose length is twice its breadth, has its perimeter
of the square field. Find the area of the rectangular field
​

Answer 1

Answer:a

Step-by-step explanation:

Answer 2

length =84 m

breadth =42m

Step-by-step explanation:

area of the square = 3969

length of the square = √3969 = 63m

perimeter of the square = 4×63m = 252m

let breadth of the rectangle be x

then length of the rectangle will be 2x

now ,

perimeter of the rectangle

252 = 2( x + 2x )

126 = 3x

x = 42

hence

breadth of the rectangle = 42m

length of the rectangle = 2×42m =84m