A piece of land is in the shape of a rhombus whose perimeter is 400 m and one of its diagonals is 160 m. Find the area of the land.

Explanation

To find the area of a rhombus given its perimeter and one of its diagonals, we can follow these steps:

### Step 1: Find the length of one side of the rhombus.
The perimeter of a rhombus is given by the formula:
\[ \text{Perimeter} = 4 \times \text{side} \]
Given that the perimeter is 400 m, we can find the length of one side:
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