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puneet2329
- Newbie | Next Rank: 10 Posts
- Posts: 5
- Joined: Sat Mar 31, 2012 3:16 am
Radius of the medallion = r
Width of the metal frame = s
So, radius of the central glass piece = (r - s)
Area of the metal frame = area of the medallion - area of the central glass piece = πr² - π(r - s)² = πr² - π(r² - 2rs + s²) = πr² - πr² + 2πrs - πs² = 2πrs - πs² = πs(2r - s)
The correct answer is E.
