Circumscribed circle to square

Find the length of a circle circumscribing a square of side 10 cm. Compare it to the perimeter of this square.

Correct answer:

d =  0 cm

Step-by-step explanation:

$$\begin{gathered} a=10 \\ {o}_1=4\cdot a=4\cdot 10=40 \\ D=\sqrt{2}\cdot a=\sqrt{2}\cdot 10=10\sqrt{2}\doteq 14.1421 \\ r=D\mathrm{/}2=14.1421\mathrm{/}2=5\sqrt{2}\doteq 7.0711 \\ d>o_1 \\ d=\pi \cdot D=3.1416\cdot 14.1421\doteq 44.4288=0\text{ cm} \end{gathered}$$

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