1. Use the figures below to estimate the area of the center
1. Use the figures below to estimate the area of the center-pivot irrigation (CPI) fields in 1991, 2000, and 2004. CPI-irrigated fields appear as green circles on the satellite images. Each circle covers approximately 0.166 km2 (1/6 km2). For this question, we will focus on the study area outlined in black in each of the three images.a. How much land was irrigated in the black square in 1991? ________km2b. How much land was irrigated in the black square in 2000? ________km2c. How much land was irrigated in the black square in 2004? ________km2