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Ellipses
Given a large ellipse containing 7 similar ellipses that, without overlapping, touch each other and/or the outer ellipse. The area of the small ellipse located at the center is 15. Attention: the figure is not drawn to scale.
Challenger
Calculate the area of the largest ellipse. Answer 0 if the area depends on the exact shape of the ellipses. Round your answer to the nearest whole number.
Mastermind
The top two ellipses touch the outer ellipse at points A and B, respectively. The bottom two ellipses touch the outer ellipse at points C and D, respectively. Calculate the area of quadrilateral ABCD. Answer 0 if the area depends on the exact shape of the ellipses. Round your answer to the nearest whole number.