A 10-foot long ladder leans against a vertical wall such that its base is 4 feet from the bottom of the wall. Determine, to the nearest tenth of a foot, how high, h, the ladder reaches up the wall.

the answer is 8

step-by-step explanation:

3.14 x 8x8

b

2

−

b

b

3

+

7

b

2

+

14

b

+

6

%

−

3

b

3

+

7

b

2

+

14

b

+

6

%

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!