Question

the length of a rectangle is 5cm more then it's breath. if the length is increased by 6cm and breath is decreased by 3 cm, then the new perimeter becomes 8/7 of the original perimeter. find the length and breath of the original rectangle.​

Answer 1

Answer:

Perimeter of rectangle = 2(l + b). = 4y + 10. Hence, original Perimeter = 4y + 10. Length is increased by 6 cm and breadth is decreased by 3 cm.

Step-by-step explanation:

Answer 2

Answer:

Let the breadth of the rectangle be xcm

Then it's length=x+5cm

Perimeter=2(length+breadth)

⇒70=2(x+(x+5))

⇒

2

70

=2x+5

⇒2x+5=35

⇒2x=35−5=30

⇒x=

2

30

=15cm

Breadth=x=15cm and length=x+5=15+5=20cm

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