## How to calculate area of irregular shapes Area of Irregular Shapes • Scale • Draw • Results

Combine area of regular shapes to find the area of irregular shapes. So far, we have found area for rectangles, triangles, trapezoids, and circles. An irregular figure is a figure that is not a standard geometric shape. Its area cannot be calculated using any of the standard area formulas. Find the area for each of those three shapes and add the results Triangle Area triangle = (base ? height)/2 Area triangle = (3 ? 4)/2 Area triangle = 12/2 Area triangle = 6 Rectangle Area rectangle = length ? width Area rectangle = 3 ? 10 Area rectangle = 30 Trapezoid Area trapezoid = ((b 1 + b 2) ? h)/2 Area trapezoid = ((3 + 5) ? 2)/2 Area trapezoid = (8) ? 2/2.

However, some irregular shapes are formed using two or more standard geometric figures. Thus, to find the area of the irregular shapes we split them according to shapes whose formulas we know and then add the area of those figures. Irregular shapes are polygons that have five or more sides of varying lengths. These shapes or figures can be decomposed further into squares, triangles, and quadrilaterals to evaluate the area.

There are various methods to calculate the Area of Irregular Shapes and we have outlined few popular ones in the below modules. They are as under. Use this Technique if you are dealing with shapes that are curves apart from a perfect circle, semicircle, and are irregular quadrilaterals.

In this technique, you need to divide the shape into unit squares. The total number of unit squares that fall within the shape determines the total area.

Count the squares as 1 if the shaded region covers more than half to have an accurate estimation. You can use this technique for irregular shapes that are a combination of known shapes such as triangles, polygons. Use the predefined formulas how to calculate area of irregular shapes find the area of such shapes and then add them up to know the total area. In this technique decompose the given irregular shape into multiple squares, triangles, or other quadrilaterals.

Based on the Curve and Shapes, part of the figure can be a circle, semi-circle, or quadrant. You must be logged in to post a comment. Irregular Shapes Definition Irregular shapes are polygons that have five or more sides of varying lengths. How to Calculate Area of Irregular Figures? They are as under Evaluating Area using Unit Squares Divide the Irregular Shapes into two how to fix a stopped up tub more regular shapes Divide the Irregular Shapes with Curves into two or more regular how to calculate area of irregular shapes Evaluating Area using Unit Squares Use this Technique if you are dealing with shapes that are curves apart from a perfect circle, semicircle, and are irregular quadrilaterals.

Divide the Irregular Shapes into two or more regular shapes You can use this technique for irregular shapes that are a combination of known shapes such as triangles, polygons. Given Irregular Shape can be divided into multiple squares, rectangles, semi-circle, etc.

Work out the Area for the following Shape? Find the Area of Irregular Figure provided below? Leave a Comment Cancel How to remove semi permanent hair dye quickly You must be logged in to post a comment.

Oct 17,  · Traditionally, the math used for calculating the area of irregular shapes is called coordinate geometry and is a system of geometry where the position of points on an X and Y axis grid is described using an ordered pair of numbers. The grids X and Y axis has both a negative and positive scale with the origin of them at the zero position. Jan 07,  · A = square units c. Find the area of the right triangle formed from the irregular shape. Given a height of 10 units and an angle of 30°, find the length of adjacent sides and compute for the area of the right triangle using Scissors formula or Heron's formula. Length = 10 / tan (30°). Sep 22,  · Have you wonder how to calculate the areas of an irregular shape? Its not a rectangular, not square, not triangle just a random zigzag line enclosed a spa.

So far, we have found area for rectangles, triangles, trapezoids, and circles. An irregular figure is a figure that is not a standard geometric shape. Its area cannot be calculated using any of the standard area formulas. But some irregular figures are made up of two or more standard geometric shapes.

To find the area of one of these irregular figures, we can split it into figures whose formulas we know and then add the areas of the figures. Solution The given figure is irregular, but we can break it into two rectangles. The area of the shaded region will be the sum of the areas of both rectangles. The right side of the figure is the length of the red rectangle plus the length of the blue rectangle.

Is there another way to split this figure into two rectangles? Try it, and make sure you get the same area. Solution We can break this irregular figure into a triangle and rectangle. The area of the figure will be the sum of the areas of triangle and rectangle.

We need to find the base and height of the triangle. Now we can add the areas to find the area of the irregular figure. The area of the figure is [latex] A high school track is shaped like a rectangle with a semi-circle half a circle on each end. Find the area enclosed by the track. Round your answer to the nearest hundredth. Solution We will break the figure into a rectangle and two semi-circles.

The area of the figure will be the sum of the areas of the rectangle and the semicircles. Skip to main content. Module Geometry. Search for:. Finding the Area of Irregular Figures Learning Outcomes Combine area of regular shapes to find the area of irregular shapes. Show Solution Solution We can break this irregular figure into a triangle and rectangle.

Show Solution Solution We will break the figure into a rectangle and two semi-circles. Licenses and Attributions. CC licensed content, Original.

## 2 thoughts on “How to calculate area of irregular shapes”

1. Vukora:

Thanks sooooooooooooooooooooo much bro

2. Tygogore:

Lol I keep watching the part when other joe comes in dancing in the beginning lol