Question

7.) The perimeter of a rectangle is 130 cm. If the breadth of the rectangle is by
30 cm, find its length. Also find the area of the rectangle.
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Answer 1

Answer:

perimeter of rectangle=130cm

2(length+breadth)=130cm

2(l+30)=130cm

2l+60=130cm

2l=130-60

2l=70

l=70/2

l=35cm

area of rectangle=length×breadth

= 35×30 cm

= 1050 cm

Answer 2

Correct Question :

The Perimeter of a Rectangle is 130 cm. If the breadth of the rectangle is 30 cm . Find its Length. Also Find the Area of the Rectangle.

Given :

⬤ Perimeter of Rectangle = 130 cm

⬤ Breadth of Rectangle = 30 cm

To Find :

⬤ Length of Rectangle .

⬤ Area of Rectangle .

Formula Used :

$\sf[\:{Perimeter\:of\:Rectangle=2(l+b)}\:]$

Solution :

• Perimeter = 130 cm
• Breadth = 30 cm
• Length = ?

According to the Formula :

130 = 2 (l + 30)

130/2 = l + 30

65 = l + 30

65 - 30 = l

35 = l

Therefore , The Length of the Rectangle is 35 cm .

Formula Used :

$\sf[\:{Area\:of\:Rectangle=l\times{b}\:]}$

Now :

According to the Formula :

35 × 30

1050

Therefore , The Area of Rectangle is 1050 cm² .

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Related Formulas :

• Perimeter of Rectangle = 2(l + b)
• Area of Rectangle = l × b
• Perimeter of Square = 4 × Side
• Area of Square = Side × Side
• Area of Triangle = 1/2 × b × h

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