Question

What is the correct answer for this problem?Explain

Answer 1

To solve this you would make a triangle, Assuming you had a piece of paper.

It would look like the picture included (where ever that is) sorry for the horrible drawing with mouse.

You can then you Pythagorean Theorem to solve this

$a^{2} + b^2 =c^2$

width will be (a) 

put in your variables

$a^2 + 72^2 = 90^2$
$a^2 + 5184 = 8100$

Subtract 5184 over and get 
$a^2 = 2916$

square root both sides and get 
a=54

the field is 54 meters wide
  

Answer 2

It’s 54 meters wide if im not wrong.. im pretty sure it’s right tho.