You can put this solution on YOUR website!
We basically have this triangle set up:
Since we can see that the triangle has legs of x and 8 with a hypotenuse of 15, we can use Pythagoreans theorem to find the unknown side.
where a and b are the legs of the triangle and c is the hypotenuse
Plug in a=x, b=8, and c=15. Now lets solve for x
Square each individual term
Subtract 64 from both sides
Combine like terms
Take the square root of both sides
Which approximates to...
So our answer is
so the ladder can reach about 13 ft on the wall