I only need help with the finding area part--I was able to sketch all the graphs. Thank you!

1.) Sketch the region enclosed by the given curves. Find the area of the region. y = 2x³, y = 2x

2.) Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle. Find the area of the region. y = 2 cos(x), y = 2e^x, x = pi/2

3.) Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle. Find the area of the region. y = x² 2x, y = 5x