The answer is 6 ^8 because half of 16 is 8
So to do this we need a little trig. picture a slide with a ladder, the slide would be the hypotenuse and the ladder would be the vertical side. and since we know the slide makes a 35 degree angle with ground we can solve by using the cosine function
because cos = opposite/hypotenuse. the opposite side is the ladder in this case. therefore your answer for how high up the slide is