There is no easy way, but here are some suggestions: (a) It may be possible to divide the irregular shape into regular parts and the area of each part can be calculated. (b) Copy the irregular shape onto a sheet of paper marked with a square grid (eg a graph paper). Count the number of squares such that at least half the square is in the object's outline. Ignore all other squares. Multiply your count by the area of a grid square. This will be an approximation to the area of the irregualr object. The finer the grid, the more accurate your estimated area but also the greater the effort involved in counting all the squares. You can draw the shape online at www.sketch n calc.com it will give you the area and perimeter of your object and it's a free calculator
by subtracting
By integration, which basically means dividing the object into small pieces.
look it up in a math book
For example, you can divide the polygon into triangles, and calculate the area of each triangle.
You get the area by using formulas. There is usually a specific formula to find the area of each shape. Some irregular shaps may not have a formula.
ask your teacher to help
For any irregular shape, you must divide it into shapes that are regular and find the area of those then add up all of the parts to find the area of the whole.
To find the area of any parallelogram, whether it be irregular or not, just multiply the base by the height. * Ap = bh
by subtracting
By integration, which basically means dividing the object into small pieces.
To find the area of irregular shapes, first, we need to divide the irregular shape into regular shapes that you can recognize such as triangles, rectangles, circles, squares and so forth. Then, find the area of these individual shapes and add them to get an area of irregular shap
Break-up the irregular object into regular objects by dividing the area. Sum the volumes of these regions together.
Divide the area into regular shapes and find their areas then add them all up together
You break it up into smaller shapes which are less irregular. If these are more regular, you can calculate their contribution to the perimeter, and their area. You can then add these together.
Try to break it down to regular shapes/objects.
You can find the area when you look at the angles and measure it to see if they are all the same size.
go to http://mathforum.org/library/drmath/sets/select/dm_area_irreg.html that will most likely answer your question or have a look at www.sketch n calc.com they have an online calculator