The bottom of a ladder must be placed 3 feet from a wall. The ladder is 12 feet long. How far above the ground does the ladder touch the wall?

Sagot :

So the ladder, wall and ground make a right triangle with the right angle between the wall and the ground. Take the square root to find the height: h=√135ft2=(3√15) ft=11.62ft (to two decimal places). The 0.62ft multiplied by 12 inches per foot gives about 7 inches, thus the height is approximately 11ft7in

Step-by-step explanation:

thats it po