Question

the perimeter of a rectangle is equal to that of a square with side 15 cm if the length of the rectangle is 12 cm find its breadth​

Answer 1

LET BREADTH OF RECTANGLE BE 'b'

ATQ ,

PERIMETER OF RECTANGLE = PERIMETER OF SQUARE

2( l + b ) = 4a

2 ( 12 + b ) = 4 × 15

24 + 2b = 60

2b = 60 - 24

2b = 36

b = 36 ÷ 2

b = 18 cm ✅