The area of a trapezium shaped field is 480 `m^2`, the distance between two parallel sides is 15 m and one of the parallel side is 20 m. Find the other parallel side.

Explanation

To find the other parallel side of the trapezium-shaped field, we can use the formula for the area of a trapezium:

\[ \text{Area} = \frac{1}{2} \times (a + b) \times h \]

where:
- \( a \) and \( b \) are the lengths of the two parallel sides,
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