Question

Find the length of line segment XY
A. 64.34
B. 8.02
C. 7.99
D. 5.55
http://roads.advancedacademics.com/contentserver/content/roadssection/279555/questions/assessments/r-reviewofthepythagoreantheoremquiz/geometry_8.1_quiz_final_18q2.png
Is it C?

Answer 1

I dont quite get C...

We have a right triangle...with 2 sides known...and we want the hypotenuse...sounds like we can use the Pythagorean theorem.

Answer 2

yes, so which answer could it be?

Answer 3

\[\large a^2 + b^2 = c^2\]

we want c "the hypotenuse" so we have

\[\large c = \sqrt{a^2 + b^2}\]
or in your case
\[\large c = \sqrt{6.5^2 + 4.7^2}\]
\[\large c = ?\]

Answer 4

A. 64.34 :) thanks!

Answer 5

Forgot the square root...

Answer 6

@cenaida

Answer 7

your right thanks! :)