Question

can someone help ? the length of the hypotenuse of a 30-60-90 triangle is 9. whats the perimeter?

Answer 1

Remember what the setup for a 30/60/90 looks like?

Answer 2

Understand how I labeled those missing sides?
The perimeter is just the sum of these sides.

Answer 3

http://img.sparknotes.com/content/testprep/bookimgs/sat2/math2c/0003/306090.gif <--- notice the ratios

Answer 4

so is it 9/2+27/2sqrt3 ?? @zepdrix

Answer 5

Hmmm I'm not sure what you did there...

Answer 6

We have to add these up:\[\Large\rm 9+\frac{9}{2}+\frac{9\sqrt3}{2}\]Maybe just some trouble adding your fractions?

Answer 7

@zepdrix these are my choices.

Answer 8

I would say it is A

Answer 9

thank youu

Answer 10

I mean I didn't really even solve anything, but okay I'll take it