Find the area between the x-axis and one cycle of a sine wave. Picture of problem attached. Explain if possible.

Presumably you want the unsigned area. To do that, I would integrate over just half a cycle (where the sine is positive), and double the result (since the region below the axis is congruent to the part you'll be doing).

Please show your work, so we can see where you need help. What is your integral, how do you work it out, and what result do you get?
 
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