Question

Ed is building a slide for his kids. If the ladder is 4 feet tall and he wants the bottom of the slide to be 8 feet from the ladder, how long does the slide need to be? If necessary, round to the nearest tenth.

Answer 1

Use the Pythagorean theorem,
a²+b²=c²
4²+8²=c²
16+64 = c²
80 = c²
c = √80