1. Navigate to the desired Web Map Maelezo ya Kipengee

2. Bonyeza Fungua katika Kitazamaji cha Ramani

3. See the Web Map

4. Bonyeza Yaliyomo

5. Bonyeza Onyesha Jedwali ikoni under the desired layer

Kumbuka: This example uses the Pradan geometry – Polygon layer

6. See the Table View

7. Bonyeza Chaguzi

8. Bonyeza Add Field

9. Fill out all content

Kumbuka: This example uses double type for its numerical field for area in hectares

10. Bonyeza Add New Field

11. See the new Field in the Table

Kumbuka: This example uses the Hectares field

12. Click on the field name, Hectares

13. Bonyeza Calculate

14. The Calculate Field window appears

15. Fill out the SQL Expression

Expression: POWER(Shape__Area,2)/10000

Explanation: The Shape_Area field is in meters. In order to convert meters to hectares, you must base the expression on the following equation: Ha = m2/1,000

16. Bonyeza Calculate

17. See that the Hectares field has been calculated