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Assuming you mean "foot of the ladder": Sqrt(144 - 81) ie sqrt 63 = 7 feet 11¼ inches.

If you mean what you wrote then zero distance!

Q: A 12 foot ladder is placed so that it is reached 9 feet up the wall how far is the foot of the wall from the buliding?

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Regard the ladder as the hypotenuse and the distance from the wall as one leg of a right angled triangle. Then, 262 = 102 + H2 : where H is the height reached up the wall by the ladder. H2 = 676 - 100 = 576 : H = √576 = 24

Using Pythagoras' theorem the length of the ladder is 20.248 feet

12 feet.

115

Using Pythagoras' theorem it is 20 feet

Related questions

13 feet

10,000 m

62+82=36+64=100 and the squared route of 100 is 10

The slope is 4 (no units), and the ladder is 16.492 feet long. (rounded)

56

3 FEET

20

Regard the ladder as the hypotenuse and the distance from the wall as one leg of a right angled triangle. Then, 262 = 102 + H2 : where H is the height reached up the wall by the ladder. H2 = 676 - 100 = 576 : H = √576 = 24

Using Pythagoras' theorem the length of the ladder is 20.248 feet

It is: 24 feet by using Pythagoras' theorem

Answer your self dont know

what made him good person is that he tried hard at what he was aiming for reached for the stars by getting to the top of a 10000000000,000 feet tall ladder