Question

Geometry help

Answer 1

is this hw or test/quiz/exam?

Answer 2

cuz it kinda looks like an online geometry quiz/test?

Answer 3

its geometry review. most of this stuff is from beginning of the year and i need refreshing.

Answer 4

Just use the Pythagorean formula.

Answer 5

a^2+b^2=c^2

Answer 6

&
it is a 30-60-90 triangle if that helps

Answer 7

so 18^2 + 9^2 = 405 = 20.1

Answer 8

You want to leave the square root in there. You can simplify it somewhat, but there is an irrational component.

Answer 9

\[\sqrt{405}\] it be that but its not right