The perimeter of the rectangle is 16 cm; its width is 4 cm less than the length. Find the sides of the rectangle.

The perimeter of the rectangle is: P = 2 (a + b), where a is the length, a, b is the width
Shore length for x, and width x-4, then
16 cm = 2 (x + x-4)
Divide both parts by 2
8 = x + x-4
-2x = -12
x = 6 – length
Hence 2cm width



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