How do you fine the area

The equation to determine the area of an object such as a square or rectangle is A=LxW which means the length times the width of the object

Area equals length multiplied by the width

L x W = A

So if you have a length of 5 and a width of 3, you would multiply those and get 15 as the area.

Now if you want the area of a triangle you do base time the height divided by two

A=bxh/2

For a circle you have pi times radius squared