a 10 ladder is leaning against a wall. if the foot of the adder is 3 from the wall,how high up the wall does the top of the ladder reach? Round to the nearest foot
Presumably you mean 10ft and 3ft.
The ladder forms the hypotenuse of a right triangle, so use Pythagoras theorem to determine the third side.
height = √(10^2 - 3^2) ft
