Question

a rectangle is made with exactly 9 m of string. its one side 2 integer 5/16 m long. what is the length of the other side?

Answer 1

Let the length of the other side be x.

Perimeter of the rectangle

= $2(2\frac{5}{16} + x) = 9 \\ \\ = 4\frac{5}{8} + 2x = 9 \\ \\ 2x = 9 - 4\frac{5}{8} = 4\frac{3}{8} \\ \\ x = 4\frac{3}{8} / 2 = 2\frac{3}{16}$

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