Im pretty sure its 17.6 :)
Answer:
The correct answer is 12.446 feet.
Step-by-step explanation:
A ladder leans against a building forming an angle of 50° with the ground.
The base of the given ladder is 8 feet away from the building.
Let the length of the ladder that is to be found be x feet.
Thus we find the cosine of the angle of inclination.
∴ cos 50° = 
⇒ x = 12.446 feet
Therefore the length of the ladder is 12.446 feet.
3^2 + 10^2 = 109
square root of 109 = 10.4403065089
Use decimals 1/3= 0.33 1/2=0.5 . 2/2= whole hour=1 multiply 1/3 times 2 and he would mow 0.66=2/6 of his yard in an hour.