What is the missing exponent for 100=10

What describes horizontal cross section of the right rectangle 6m 8m 5m

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

Hi, can anyone show me how to do this problem? 100 points for this. in advance