Can someone please solve this with a=1 and explanation

1. (10 points) Area between two curves a. Sketch the region bounded by x = y2 - a and x = -yz + a. b. Draw a representative rectangle for finding the area between the curves in your sketch. Be sure that the rectangle is appropriate for the integral that you write in part c. c. Set up an integral for finding the area between the two curves. Do not solve the integral, but do explain what each part of the integral represents geometrically. d. Evaluate the integral to find the area of the region