A 12ft ladder leans against a wall. the base of the ladder is 4.5ft away from the wall. how high up the wall is the top of the ladder?

11.12 feet

Step-by-step explanation:

Here, ladder is making a right triangle with the wall and ladder is acting as hypotenuse. Thus by using Pythagoras theorem:

Let ladder is h feet high up the wall.

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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cluster sampling.

step-by-step explanation: