The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are `1 m` and `1.2 m` and perpendicular distance between them is `0.8 m`.

Explanation

To find the area of the trapezium-shaped top surface of the table, we can follow these steps:

### Step 1: Identify the lengths of the parallel sides and the height
The lengths of the parallel sides (bases) of the trapezium are given as:
- Base 1 (b1) = 1 m
- Base 2 (b2) = 1.2 m

The perpendicular distance (height) between the parallel sides is:
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