JEE Previous Year Question

The area (in sq. units) of the region bounded by the curves $y=4\text{|}\text{cos}\text{⁡}x\text{|}$ and $y=-\text{|}\text{cos}\text{⁡}x\text{|}$ from $x=-\frac{\pi }{2}$ to $\frac{\pi }{2}$ is

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.