what are the answers to this and please tell me the bonus questions

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?