Question

the perimeter of a rectangle card is 409mm and it's length is 6 cm.what is breadth?​

Answer 1

Answer:

b= 19.45 cm

Step-by-step explanation:

Refer to the attachment...

Answer 2

Answer:

Perimeter of the rectangular card = 409 mm

Length of the rectangular card = 6 cm

= 60 cm

Assumption: Let the breadth of the rectangular card be x mm.

We know,

Perimeter = 2 × (length + breadth)

=> 409 = 2 × (60 + x)

=> 409/2 = 60 + x

=> 409/2 - 60 = x

=> (409 - 120) / 2 = x

=> 289/2 = x

=> 144.5 = x

So, the breadth of the rectangular card is 144.5 mm or

14.45 cm

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