Question

1.
If the length and breadth of a rectangle are doubled, how many times the perimeter of the
old rectangle will that of the new rectangle be?
2.
If the side of a square is tripled, how many times the perimeter of the
first square will that of the new square be?


please do it as soon as possible

please do it till tomorrow 2 pm​

Answer 1

Answer:

1. length and breadth are doubled.

So l' = 2l

and b'= 2b.

New perimeter P' = 2 (l'+b')

P'= 2 (2l +2b)

P' = 2×2(l+b)

P' = 2P

2. a' =3a

new perimeter P' = 4a'

P' = 4×3a

P' = 3P.

Hope it helps..

✌

Answer 2

Answer:

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