Question

help!!!! please
https://media.studyisland.com/pics/192060pic5.png
Note: Figure is not drawn to scale.

If l = 12 cm and m = 5 cm, what is the length of n?
A. 11 cm
B. 14 cm
C. 13 cm
D. 10 cm
@johnweldon1993

Answer 1

Hi!

Alright so you have a right triangle...

You can use the pythagorean theorem here to do this...

It states...in a right triangle...the length of the hypotenuse...is the square root of the sum of squares of the other legs...Also known as

\[\large C = \sqrt{a^2 + b^2}\]

Here to make this more visual...let's use your variables...

\[\large N = \sqrt{L^2 + M^2}\]

Now we plug in the numbers you were given

\[\large N = \sqrt{12^2 + 5^2}\]
\[\large N = \sqrt{144 + 25}\]
\[\large N = \sqrt{169}\]
\[\large N = 13\]

Answer 2

i forgot to square root it!!!!!! thanks for putting in the steps to!!!!!

Answer 3

No problem :)