Question

http://prntscr.com/8jaxb9
WILL MEDAL & FAN

Answer 1

@Zarkon

Answer 2

@radar

Answer 3

We can do this:
\[x ^{\frac{ m }{ n }} = x ^{m .{\frac{ 1 }{ n }}} = (x ^{m})^{\frac{ 1 }{ n }} = \sqrt[n]{x ^{m}}\]

So, side is: \[2^{\frac{ 7 }{ 2 }} = \sqrt[2]{2^{7}}\]

A = Side²
\[A =(\sqrt[2]{2^{7}})^{2} = 2^{7}\]
A = 128 inches