The parallel sides of a trapezium are 25cm and 13cm; its nonparallel sides are equal, each being 10cm, find the area of the trapezium.

Explanation

To find the area of the trapezium with parallel sides of lengths 25 cm and 13 cm, and non-parallel sides of equal lengths of 10 cm, we can follow these steps:

### Step 1: Understand the trapezium
We have a trapezium ABCD where AB is parallel to CD. The lengths of the parallel sides are:
- AB = 25 cm
- CD = 13 cm
The non-parallel sides (AD and BC) are equal:
- AD = BC = 10 cm
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