What is the most accurate representation of the area of a plot measuring 11.7 cm by 15.4 cm?

The most accurate representation of the area of a plot is to get its actual area based on the given measurements.
Its area is 180.18 cm².

Given:
11.7 cm by 15.4 cm

With the given measurements, it is safe to assume that the plot is rectangular in shape.

To get the area of the rectangular plot, we need to multiply its length by its width.

Length is the longer measurement, thus, it is 15.4 cm. 
11.70 cm is the width of the plot.

Area of the rectangle = Length * Width
A = 15.40 cm * 11.70 cm
A = 180.18 cm²