Question

if the length of the rectangle is increased by 40%and its breath is decreased by 40% what will be the percentage change in it perimeter.​

Answer 1

Answer:

32.72%

Step-by-step explanation:

let length be 1000

breadth be 100

so perimeter is 2*(100+ 1000)= 2200

on changing parameters,

new length is 1400

new breadth is 60

new perimeter is 2*(1400+60)= 2920

so change is

2920- 2200= 720

720/2200*100= 32.72%