The perimeter is the continuous line forming the boundary of a closed geometric figure. Think of walking around a football field. The distance you travel is the sum of the four sides.
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The total perimeter can be found by adding the two known sides together - then multiplying by 2 !
The length of each side, when added together, forms the perimeter.
Octagon has 8 sides. Each side has the value = 4cm so to find the perimeter of the figure we need to add all the values. But here all sides are equal so instead of adding all the the values we can multiply. So perimeter = 8*4=32cm. Hope it was useful!!!
The perimeter of a square is calculated by adding up the lengths of all four sides. Since a square has equal sides, you can simply multiply the length of one side by 4 to find the perimeter. In this case, with each side measuring 36cm, the perimeter of the square would be 36cm x 4 = 144cm.
perimeter of a rectangle is 20 on each side