Answer:
in very much deed you do need help :)))))))
[tex] \huge\boxed{\frac{1}{2} \times base \times height} \\ [/tex]
[tex] \frac{1}{2} \times 10 \times x = 50 \\ x = \frac{50 \times 2}{10} \\ \boxed{x = 10}[/tex]