help as soon as possible plss

Answer:
By using the Pythagorean Theorem, we know that the length of the slide is 17 ft.
Step-by-step explanation:
We can use the Pythagorean Theorem to solve this equation.
[tex]a^2+b^2=c^2[/tex]
a = 8
b = 15
Now, let's plug in these numbers so we can know the length of the slide.
[tex]8^2+15^2=c^2\\64+225=c^2\\289=c^2\\\sqrt{289}=\sqrt{c^2}\\17=c[/tex]
So, the length of the slide is 17 ft which is answer choice C.
Answer:
a^2 + b^2 = c^2
8^2 + 15^2 = c^2
64 + 225 = c^2
289 = c^2
[tex]\sqrt{289}[/tex] = c
17