# Chapter 8 - Section 8.2 - Perimeter and Area of Polygons - Exercises - Page 371: 40b

264.5

#### Work Step by Step

A diagonal of square RSTV is 23 long. Thus, we obtain that each of its sides is: $\frac{23}{\sqrt2} = \frac{23\sqrt{2}}{2}$ Squaring this, we obtain that the perimeter is: $264.5$

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