A

Acquire

B

Basic

C

Concepts

\(a^2 = h^2 + \frac{b^2}{4}\)

\(a^2 - \frac{b^2}{4} = h^2\)

\(\frac{4a^2 - b^2}{4} = h^2\)

\(\sqrt \frac{4a^2 - b^2}{4} = h\)

\(\frac{\sqrt{4a^2-b^2}}{2} = h\)