Question

The Perimeter Of A Square Is Equal To The Perimeter Of A Rectangle If Side Of A Square Is 30cm.And Length Of A rectangle Is 40cm. Then Find The Breadth Of The Rectangle.​

Answer 1

Answer:

let the breadth of rectangle be b

as perimeter of rectangle=perimeter of square

2(40+b)=4×30

=> 80+2b=120

=> 2b=120-80=40

=> 2b=40

=> b=40/2

=> b=20

therefore breadth=20 cm

Answer 2

Answer:

Perimeter of square =perimeter of rectangle

4×side=2(l+b)

4×30=2(40+b)

120/2=40+b

60=40+b

20 cm=b