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There are three main methods:

Method 1: The simplest situation is one in which the irregular shape can be divided up into shapes whose areas can be calculated. For example, the outline of an ice-cream cone may be viewed as a triangle with a semi-circle on top. So calculate the areas for the bits and add them up.

Method 2: Trace the shape onto dense lamina of uniform thickness. Cut out the shape and measure its mass. Next cut out a UNIT square of the same lamina and measure its mass.

Then

Area of irregular shape = Mass of irregular lamina/Mass of lamina square.

Method 3: Trace the shape onto a sheet of paper with square gridlines on it. Count the number of whole (or almost whole) squares inside the shape = A. Count the number of squares where approximately half is inside the area = B. Ignore all squares where only a tiny bit is in the marked area.

Then,

Area of irregular shape = (A+B/2)*area of unit square in the grid.

The finer the grid, the more accurate your result, but also the harder you'll have to work.

Q: How do you do area for an irregular shape?

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You approximate the irregular shape with many small regular figure, for example, long and thin rectangles.

look it up in a math book

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.

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.

An irregular shape!

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There is no set formula.You have to "split" the irregular shape into regular shapes, use whatever dimensions you have and fit them into the formulas of the known shapes.Find the area of each split shape. Lastly, you add all the areas to give you the totl area of the irregular shape

There is no formula. That's why it's called irregular!

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

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.

Divide the area into regular shapes and find their areas then add them all up together

You approximate the irregular shape with many small regular figure, for example, long and thin rectangles.

In real life, things do not always have a neat geometric shape. Chemical processes in living organisms depend on the surface area of cells or organs. these are of irregular shape. For example photosynthesis in trees depends on the surface area of leaves. All leaves have irregular shapes.

Finding the area of an irregular shape is now quite easily done after watching the instructional video at [See related link below for the website] and it's for free

I assume you mean the calculation required. Split the irregular shape up into shapes for which you can find the area (eg rectangles, triangles), then the area of the shape is the sum of the areas of the smaller shapes.

A square is not an irregular shape and conversely. So the square of an irregular shape cannot exist.A square is not an irregular shape and conversely. So the square of an irregular shape cannot exist.A square is not an irregular shape and conversely. So the square of an irregular shape cannot exist.A square is not an irregular shape and conversely. So the square of an irregular shape cannot exist.

look it up in a math book

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.