Certainly. Infinitely many for any given area.
29
well..... it could be the area of a circle and many other things (well shapes)
Yes - even shapes with different area.
Polygons and 2 dimensional shapes
There are infinitely many shapes.
36.
2 and 3
9.
36, 72, 108 and so on.
The GCF is 18.
The GCF is 9.
Certainly. Infinitely many for any given area.
29
well..... it could be the area of a circle and many other things (well shapes)
Yes - even shapes with different area.
The answer depends on the shape whose area is sought. For some simple shapes there are easy formulae. Then there are less simple shapes which can be broken down into simple shapes and their area is simply the sum of the components. However, in many cases, the best that you can do is to make approximate estimates.