d = \sqrt{5^2 + 5^2} = \sqrt{50} = 5\sqrt{2}
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- \boxed{10, \, 0.8}
- A circle is circumscribed around a square with side length \(5 \, \text{cm}\). What is the circumference of the circle?
- The diagonal of the square is the diameter of the circumscribed circle. Using the Pythagorean theorem:
- The radius \(r\) of the circle is half the diagonal:
- r = \frac{5\sqrt{2}}{2}
- C = 2\pi r = 2\pi \left(\frac{5\sqrt{2}}{2}\right) = 5\pi\sqrt{2}
