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.
The perimeter of a shape is the distance around the outside, for instance, the length of all the sides of a square added together. The area however, is the amount of space within the shape, for example, to find the area of a square, you would simply multiply the length of the side by length of the side.
how can you find the perimeter of a cone i.e. a 3d shape!
For the area of a square, it is the base x the height, and the perimeter is 2height+2base. For the area of a triangle, it is base x height divided by two. And to find the perimeter you just add up each of the side lengths.
find the perimeter and area of a rectangle that is 15cm long and 5cm wide
There is no relationship between the perimeter and area of a rectangle. Knowing the perimeter, it's not possible to find the area. If you pick a number for the perimeter, there are an infinite number of rectangles with different areas that all have that perimeter. Knowing the area, it's not possible to find the perimeter. If you pick a number for the area, there are an infinite number of rectangles with different perimeters that all have that area.
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.
nope
well you know that to be called a square a shape must have sides that are all the same size. So knowing this and knowing how to find the area of a shape being Length x width You simply square root 100 and you find that its length and width are both 10 so you know the perimeter is 40
In general you cannot find the perimeter of any shape if only the area is given.
You can find the perimeter of any geometric shape knowing the length of one side if all sides are equal. For example: squares, hexagons, octagons and so on...
To find the perimeter of a shape given the area in square feet, you need to know the dimensions of the shape. If it's a square or rectangle, you can calculate the perimeter by finding the square root of the area to get the side length, and then multiply that by 4 for a square or 2 times the sum of the length and width for a rectangle. If it's a different shape, you will need additional information to determine the perimeter.
It depends on the shape.
Knowing only the area, there is no way to find the dimensions without significantly more information.
To find the perimeter and areas of complex shape without a grid you should divide the shape into simple shapes and find the area of each shape alone and then add up the areas all together to get the area of the whole shape. Example: If there is a shape that can be divided into 2 triangles and 1 rectangle then you will find the area of each triangle alone and then the area of the rectangle then add up all the areas together.
You have to add up all the sides of the shape.
Break the composite shape down into simple units. Find the perimeter and area of each and then add these up as appropriate. If the shape cannot be broken down easily you may have to rely on integration or numerical methods.