Can I Plss get help on this 20 &21 if you can

Solution:
Given an equilateral triangle with side length 38 inches.
We would apply Pythagorean Theorem;
[tex]\begin{gathered} h=\sqrt{38^2-19^2} \\ \\ h=32.91in \end{gathered}[/tex]ANSWER: The height of the equilateral triangle is 32.91 inches.