127.3 ft
Explanation
Step 1
Diagram
as the field is a square ,we know each angle is 90 °, hence, the triangle formed by , the first base, the third base and the second baseis a rigth triangleb
so, we can use the Pythagorean theorem,it states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse:
so
Let
[tex]\begin{gathered} side1=\text{ side2= 90 ft} \\ hypotenuse=h \end{gathered}[/tex]hence
[tex]\begin{gathered} 90^2+90^2=h^2 \\ 8100+8100=h^2 \\ 16200=h^2 \\ h=\sqrt{16200} \\ h=127.279 \\ \end{gathered}[/tex]therefore, the answer is
127.3 ft
I hope this helps you