Answer:
=√85 units
Explanation:
In parallelogram, opposite sides are equal. So, ST = UV
Distance of UV =
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![\sqrt{(x_(2)-x_(1))^(2)+(y_(2)-y_(1))^(2)}}\\\\=\sqrt{(5-[-4])^(2)+(3-1)^(2)}\\\\=\sqrt{(5+4)^(2)+(3-1)^(2)}\\\\=\sqrt{9^(2)+2^(2)}\\\\=√(81+4)}\\=√(85)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/i0gjq0ktlhqs4q5y0pc4hb4qallxhor08c.png)