How long must a ladder be to reach the top of a 12-foot wall if the both of the ladder is placed 3 feet from the base of the wall?
What is the unknown information that could be found using the Pythagorean theorem?
What is the approximate length of the ladder needed, rounding to the nearest hundredth

the hypotenuse,or lenght of the ladder,

; 12.37 ft

Step-by-step explanation:

I just took the assignment

easy math just plug in a and b

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb