Perimeter of a figure means the sum of the lengths of all the sides.
A square has four sides, and in this case, the square's sides' lengths are 21 in.
21 in. * 4 sides = 84 in.
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if it is a 2 inch square and the side lengths are doubled the side lengths would be 4. therefore 4+4+4+4=16 so the perimeter is 16inches squared.
The perimeter.
L is side length so perimeter is 4L. If L is tripled the perimeter becomes 4 x 3L = 12L, so perimeter is also tripled.
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.
6.4 metres !