Question

question

Answer 1

well there are many methods but i am telling the general one =]

we need to find percentage change in perimeter.

well 1st lets assume the length to be \(l\)
and breadth to be \(b\)

so initial perimeter will be this->
\(perimeter= 2(l+b)\)

now you gotta find new length and breadth
and then find new perimeter

Answer 2

what about assuming values as
l=10,b=10
p=40

l=11,b=8

p=22+16=38

Answer 3

yeah i guess this method will be better because when we go with assuming \(l\) and \(b\) the assumed variables don't cancel when we find percentage and it comes in terms of \(l\) and \(b\) :)

Answer 4

but it says cannot be determind

Answer 5

yes
the percentage change will depend upon the value of \(l\) and \(b\)

if you assume another different values then you will get another percentage change
so basically the percentage change will surely depend upon what value of \(l\) and \(b\) you take so we say its cannot be determined

Answer 6

if it could be determined then the variable containing terms must get cancelled when we go by the general method which i wrote at 1st

Answer 7

ok thnks

Answer 8

np :)