A) What are two units used for area measurement? b) What are two types of surface areas in land surveying? c) Calculate the surface area of the land given the coordinates.

• Square meters ($\text{m}^2$)
• Hectares ($\text{ha}$)

• Horizontal surface area: This is the area projected onto a horizontal plane, which is typically what is calculated for land plots using coordinates.
• Sloping surface area: This is the actual physical surface area of the land, taking into account its undulations and slopes. It is always greater than or equal to the horizontal surface area.

The coordinates are given as (East, North). We will use the shoelace formula for the area of a polygon.
Points:
A: $(x_1, y_1) = (364.392, 674.345)$
B: $(x_2, y_2) = (526.937, 715.825)$
C: $(x_3, y_3) = (682.910, 562.826)$
D: $(x_4, y_4) = (561.039, 328.426)$
E: $(x_5, y_5) = (385.491, 351.813)$

Figure 2, which is referenced in this part of the question, is not provided in the image. Therefore, it is not possible to calculate the perimeter of the portion without the additional information from Figure 2.