Sure! Hereâ€™s a worksheet on the area of a rectangle with diagrams for each question:

Worksheet: Area of a Rectangle

Instructions: Calculate the area of each rectangle by multiplying the length and width. Use the diagrams provided to help you visualize the rectangles.

Question 1: Length: 5 units Width: 3 units

Diagram:
```
+-----+
| |
| |
| |
+-----+
```

Question 2: Length: 8 units Width: 2 units

Diagram:
```
+-------+
| |
| |
+-------+
```

Question 3: Length: 6 units Width: 4 units

Diagram:
```
+---------+
| |
| |
| |
+---------+
```

Question 4: Length: 10 units Width: 7 units

Diagram:
```
+-----------+
| |
| |
| |
| |
| |
| |
+-----------+
```

Question 5: Length: 12 units Width: 9 units

Diagram:
```
+-------------+
| |
| |
| |
| |
| |
| |
| |
| |
+-------------+
```

Question 6: Length: 15 units Width: 5 units

Diagram:
```
+---------------+
| |
| |
| |
| |
| |
+---------------+
```

Question 7: Length: 4 units Width: 4 units

Diagram:
```
+----+
| |
| |
+----+
```

Question 8: Length: 9 units Width: 6 units

Diagram:
```
+---------+
| |
| |
| |
+---------+
```

Question 9: Length: 11 units Width: 3 units

Diagram:
```
+-----------+
| |
| |
| |
+-----------+
```

Question 10: Length: 7 units Width: 7 units

Diagram:
```
+---------+
| |
| |
| |
| |
| |
| |
+---------+
```

Answer Key: 1. Area: 15 square units 2. Area: 16 square units 3. Area: 24 square units 4. Area: 70 square units 5. Area: 108 square units 6. Area: 75 square units 7. Area: 16 square units 8. Area: 54 square units 9. Area: 33 square units 10. Area: 49 square units

Note: The diagrams are not to scale, they are just for visualization purposes.