The perimeter is the total distance around the edge of a two-dimensional shape. It is calculated by adding together the lengths of all the sides of the figure. For example, the perimeter of a rectangle is found by adding the lengths of all four sides, or using the formula ( P = 2(l + w) ), where ( l ) is the length and ( w ) is the width. Each shape has its own formula for calculating the perimeter, depending on its specific dimensions.
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4 x length of any one side.
28
25cm - without using a calculator !
it depends on the triangle.if it is a "pure" triangle (symetrical on all sides) then the permeter is 9
You can find the permeter if you know the length of the sides. You need to add the lengths of all the sides together.