Solution: The diagonal of the rectangle is the circle's diameter. Using the Pythagorean theorem: $ \text{Diagonal} = \sqrt{3^2 + 4^2} = 5 $ cm. The circumference is $ \pi \cdot \text{diameter} = 5\pi $ cm. Thus, the circumference is $ \boxed{5\pi} $ cm.

Tue, 05 May 2026 23:47:53 +0000

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