A 24 foot ladder is leaning against the side of a house and is positioned 21 feet from the house. How far above the ground is the point where the ladder touches
the building?

11.7 feet long

Step-by-step explanation:

Formula: a^2+b^2=c^2

a^2+21^2=24^2

a^2+441=576

576-144=135

Square root of 135 is 11.61895004

Round to the nearest tenth is 11.7

after simplifying it i got: -36.25 as my answer. hope that !

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.