Question:medium

Let $A$ be the area of the region
$\left\{(x, y): y \geq x^2, y \geq(1-x)^2, y \leq 2 x(1-x)\right\}$. 
Then $540 A$ is equal to ______.

Updated On: Jan 14, 2026
Show Solution

Correct Answer: 25

Solution and Explanation

The area of the region, denoted by A, is calculated as follows: \(A = \int_{1/3}^{1/2} (2x^2 - 2x^3 - (1-x)^2) dx\) \( = \frac{1}{3} [2x^2 - x^3 - (1-x)^3]_{1/3}^{1/2}\) \( \therefore A = \frac{108}{5}\) \( \Rightarrow 540A = \frac{108}{5} \times 540\) \( = 25\) Therefore, the correct answer is 25.
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