Question

the perimeter of a rectangle 56 cm and length of a rectangle 17 cm find the breadth of the rectangle ​

Answer 1

Answer:

In a rectangle we know that two opposite sides are equal. So, PQ = SR and PS = QR

Step-by-step explanation:

If PS = l and PQ = b

Perimeter of a Rectangle

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Perimeter of the rectangle = PQ + QR + RS + SP

= b +l + b + l

= 2b +2l

Again,

ABCD is a rectangle. We know that the opposite sides of a rectangle are equal.

Perimeter of a Rectangle

AB = CD = 5 cm and BC = AD = 3 cm

So, the perimeter of the rectangle ABCD = AB + BC + CD + AD = 5 cm + 3 cm + 5 cm + 3 cm = 16 cm

It can be written as 5 cm + 5 cm + 3 cm + 3 cm

= (2 × 5) cm + (2 × 3) cm

= 2 (5 + 3) cm

= 2 × 8 cm

= 16 cm

We add length and breadth twice to find the perimeter of a rectangle.

Perimeter of a rectangle = 2 (length + breadth)

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Answer 2

Answer:

Breadth = 11 cm

Step-by-step explanation:

Perimeter = 56 cm

Length = 17 cm

Breadth = x

Perimeter of a rectangle = 2(l + b)

56 cm = 2(17 + x)

56 = 34 + 2x

56 - 34 = 2x

22 = 2x

22/2 = x

11 = x