What is the % change in the area of a rectangle when its length increases by 10% and its width decreases by 10%?
1 Answer
Mar 4, 2018
I tried this:
Explanation:
Let us call the length
let us change the two to get:
rearrange:
but
so the new area is
For example;
imagine a rectangle where:
Area
Now we increase the length and decrease the width:
Area'
that represents