Question

A 12 foot flagpole casts a 9 foot shadow what is the measurement from the top of the shadow to the top of the flagpole?
15
21
3
6

Answer 1

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

Answer 2

a=12, b=9

Answer 3

so now solve for c
\[c=\sqrt{a^2+b^2}\]

Answer 4

21?

Answer 5

nope

Answer 6

how did you get that?

Answer 7

idk i am really bad at math sorry

Answer 8

i am more of a history person

Answer 9

alright well you have\[c=\sqrt{12^2+9^2}\]\[c=\sqrt{225}\]

Answer 10

this can easily be solved in your head if you divide everything by 3 first, then you have a 5,4,3 triangle, so you know that \(\frac{c}{3}=5\) and c=15

Answer 11

but if you know sqrt{225} then you can directly calculate it

Answer 12

ok that makes seance

Answer 13

now apply the formula richyw told.