Question

if one side of a square is increased by 5 metres and the other side is reduced by 5 metres, a rectangle is formed whose perimeter is 30 m. find the side of the original square.​

Answer 1

Answer:

7.5 is the answer of your questions

Answer 2

Answer:

7.5m

Step-by-step explanation:

$lets \: side \: of \: square \: is \: \: x \\ after \: increases \: and \: decreases \: \: length \: \: and \\ breadth \: of \: rectangle \: \: are \: (x + 5) \: and \: (x - 5) \: respectively \: \\ perimeter \: \: = 2 \times (l + b) \\ 30 = 2 \times (x + 5 + x - 5) \\ 30 = 2 \times 2x \\ 30 \div 4 = x \\ x = 7.5m$