To find area $ A $ use formula:
$$ A = a \cdot b $$After substituting $ a = \frac{ 759 }{ 25 } $ and $ b = \sqrt{ 8 } $ we have:
$$ A = \frac{ 759 }{ 25 } \cdot \sqrt{ 8 } $$$$ A = \frac{ 759 }{ 25 } \cdot \sqrt{ 8 } $$$$ A = \frac{ 1518 \sqrt{ 2}}{ 25 } $$