Question

length 16 cm breadthX primeter40 cm​

Answer 1

Answer:

4cm

Step-by-step explanation:

For Rectangle

Let the breadth be x

Length= 16

Perimeter= 40

Perimeter= 2(l+b)

40= 2(16+x)

40÷2= 16+x

20= 16+x

20-16= x

x=4

Therefore, the breadth is 4cm

Answer 2

Here length and perimeter of a rectangle are given

length = 16 cm

perimeter = 40 cm

We have to find the breadth

Here the breadth is assumed to be x

So, perimeter = 2 ( length + breadth )

                  40 = 2 ( 16 + x)

                   20 = 16 + x

                   x = 20 - 16

                  x = 4 cm

Hence, the breadth  of the rectangle will be 4 cm