If a 6-foot tall man casts a 9-foot shadow, what is the approximate measure from the top of his head to the top of his shadow? 10 feet 11 feet 12 feet

I'd gotten 10.8 feet for the answer using the equation:

a^2+b^2=c^2
(a{squared}+b{squared}=c{squared})

Where 6 is your a variable, 9 is your b variable and you are looking for your c variable (hypotenuse).

a- 6^2 (6{squared}) or 6x6 giving you 36
b- 9^2(9{squared}) or 9x9 giving you 81
Adding those together you'll have 117.

117=c^2

You would have to get rid of the squared sign so you'll find the square root because finding the square root of something is the opposite of squaring it.

c=10.8 feet (rounding to 11 feet)