Idon't know how to do either questions

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

What is the sum of the first 8 terms of the geometric series

Find the measure of angle y. round your answer to the nearest hundredth. ( type the numerical answer only) a right triangle is shown with one leg measuring 5 and another leg measuring 14. an angle across from the leg measuring 5 is marked y degrees. numerical answers expected!