Question

In a rectangle, if the length is increased by 20% and the breadth is decreased 20%, find the percentage change in its area​

Answer 1

Step-by-step explanation:

original length=L

original width=W

original area=L×W

after changes

length=1.2L

Width=0.8W

area=1.2L×0.8W

=0.96L×W

percentage change=(1-0.96)/1=0.04or 4%(decrease)