Rock750 wrote:
m22 q20
What is the area of the region enclosed by lines y=x, x=-y, and the upper crescent of the circle y^2+x^2=4 ?
A. \frac{\pi}{4}
B. \frac{\pi}{2}
C. \frac{3\pi}{4}
D. \pi
E. 4\pi
What is the area of the region enclosed by lines y=x, x=-y, and the upper crescent of the circle y^2+x^2=4 ?
A. \frac{\pi}{4}
B. \frac{\pi}{2}
C. \frac{3\pi}{4}
D. \pi
E. 4\pi
...
My solution(with detail explanation):
This diagram is indispensable: