As given in the picture, the area is calculated as:
Required Area = \( \frac{1}{2} \times 2 \times 2 + \frac{1}{2} \times 3 \times 3 + \frac{1}{2} \times 1 \times 11 \)
Required Area = \( 2 + \frac{9}{2} + \frac{11}{2} \)
Required Area = \( 2 + \frac{20}{2} \)
Required Area = \( 2 + 10 \) Required Area = \( 12 \)
Thus, following the given solution, the area is 12.
The eccentricity of the curve represented by $ x = 3 (\cos t + \sin t) $, $ y = 4 (\cos t - \sin t) $ is:
Let $ P_n = \alpha^n + \beta^n $, $ n \in \mathbb{N} $. If $ P_{10} = 123,\ P_9 = 76,\ P_8 = 47 $ and $ P_1 = 1 $, then the quadratic equation having roots $ \alpha $ and $ \frac{1}{\beta} $ is: