please help guys!!! If x = 48 cm and y = 55 cm, what is the length of w?
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OpenStudy (anonymous):
OpenStudy (anonymous):
A 73 cm
B 103 cm
C 77 cm
OpenStudy (anonymous):
@sajjadahmed
OpenStudy (anonymous):
im not so good at geometry
OpenStudy (whpalmer4):
Use the Pythagorean theorem, as this is a right triangle.
The sum of the squares of the shorter two legs will equal the square of the length of the longest leg (which is called the hypotenuse). \[x^2+y^2=w^2\]
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OpenStudy (anonymous):
ok
OpenStudy (anonymous):
yea hes right!
OpenStudy (anonymous):
a^2 + b^2 = c^2
OpenStudy (anonymous):
I know its either a or c
OpenStudy (whpalmer4):
There's no need to guess, you can figure it out exactly and be confident that your answer is correct.
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OpenStudy (anonymous):
so 48^2+55^2=w^2
2304+3025
5329
and then square root tht
73
A
OpenStudy (anonymous):
yea hes righ toy u probably should try dong i yourself...
OpenStudy (whpalmer4):
It is good to know that B couldn't be an answer, however, because 48+55 = 103, and that would mean our triangle had no interior! The two sides added together should be greater than the length of the hypotenuse...