A circular medallion of radius 28 cm is fitted perfectly inside a square box. Find the area of unused square space around the circle.

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1. **Square side** = diameter = $2r = 2	imes28 = 56$ cm.

2. **Square area** = $56^2 = 3136\ 	ext{cm}^2$.

3. **Circle area** = $\pi r^2 = \pi	imes28^2 = 784\pi$. Using $\pi=22/7$ gives $784	imes	frac{22}{7}=2464\ 	ext{cm}^2$.

4. **Unused area** = $3136-2464=672\ 	ext{cm}^2$.

FINAL_ANSWER: a

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