If you want to ask questions about "this", then I suggest that you make sure that "this" does appear in the question.
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That depends on the dimensions !... A 1 x 18 rectangle has a perimeter of 38 ! A 2 x 9 rectangle has a perimeter of 22 ! A 3 x 6 rectangle has a perimeter of 18 !
A 9 x 1 rectangle has a perimeter of 20 and an area of 9; A 9.5 x 0.5 rectangle has the same perimeter but an area of 4.75; You can go a long way along this road...
Let x be the unknown dimension x+x+x+20+x+20 = perimeter of the rectangle 4x+40 = 160 4x = 160-40 4x = 120 x = 30 Therefore the width is 30 cm and the length is 50 cm
20 x 2 = 4007 x 2 = 1440 + 14 = 54cmSo the perimeter is 54cm
The perimeter formula of a rectangle is add 2 times the length by 2 times the width.