Question

The perimeter of a rectangular sheet is 100cm. If the length is 35cm, find its breadth *



15cm

16cm

17cm

25cm

​

Answer 1

Answer:

Let length=l, breadth=b of rectangle

⇒ Perimeter=2(l+b)

⇒100=2(35+b)

⇒50=35+b

⇒b=15cm

Area=lb=35×15=525cm

2

.

Step-by-step explanation:

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Answer 2

Answer :

15 cm

Given :

• Perimeter of rectangular sheet = 100 cm
• Length of rectangular sheet = 35 cm

To Find :

• Breadth of rectangular sheet

Solution :

As, we know that,

In rectangle

Perimeter = 2 (length + breadth)

$\sf : \implies 100 cm = 2 (35 cm + b)$

$\sf : \implies \dfrac{100 cm}{2} = 35 cm + b$

$\sf : \implies \dfrac{\cancel{100}^{\: 50} cm}{\cancel{2}} = 35 cm + b$

$\sf : \implies 50 cm = 35 cm + b$

$\sf : \implies 50 cm - 35 cm = b$

$\sf : \implies 15 cm = b$

$\sf : \implies b = 15 cm$

$\large \underline{\boxed{\sf b = 15 cm}}$

Therefore, breadth of given rectangular sheet is 15 cm.