Question

Perimeter of a rectangle will be doubled if its length and breadth are doubled. State whether it is true or false with explanation.

Answer 1

let's check

original perimeter =2 (l+b)

if length and breadth is doubled

new perimeter = 2×2 (l+b)

from here we found that statement is correst

Answer 2

Answer:

perimeter=2(l+b)

if l and b are double

2(2l+2b) taking 2 common

4(l+b)

it is double

hence prooved