Answer:
The length of WX is 31 units.(third option)
Explanation:
Given that In trapezoid WXYZ, WX║ZY and S and T are the mid points of the sides WZ and XY. We have to find the length of WX.
By trapezoid mid-segment Property,
A mid-segment of a trapezoid join the midpoints of the two non-parallel sides of trapezoid. The length of the mid-segment is the average of the lengths of the two bases and is parallel to the bases of the trapezoid.
∴
![ST=(WX+ZY)/(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/ukghxvrhgbpvzaxmj270euocjtjf7v4rlo.png)
⇒
![48=(WX+65)/(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/a5dpgpmc6brtvg4roz527sbdoyylqb4049.png)
⇒
![96=WX+65](https://img.qammunity.org/2020/formulas/mathematics/high-school/utf8d2ijism7xr5a3q8p5bfna0tsrw6a2c.png)
⇒
![WX=96-65=31](https://img.qammunity.org/2020/formulas/mathematics/high-school/vrw8bzmbzmxf7wba4gh1a1sw1gjetu1frz.png)
The length of WX is 31 units.(third option)