Question

http://prntscr.com/4dlk3h

Answer 1

@jim_thompson5910

Answer 2

@robtobey

Answer 3

@tejasvir

Answer 4

ok, can you tell me next step please.

Answer 5

ok

Answer 6

wait

Answer 7

im getting 16.58 and the closest thing is 16.9 so i may be doin something wrong

Answer 8

\[\sqrt{18^2-7^2}=16.5831 \]

Answer 9

ya dunno

Answer 10

so A?

Answer 11

The plain simple fact is that the solution poster made a mistake.

Answer 12

ok so i gonna try A

Answer 13

is that good?

Answer 14

The solution poster may have been thinking that that 58 is closer to 9 than to 8.

Answer 15

so i gonna try A

Answer 16

A IS CORRECT :)