Source: FUVEST 2021, 2nd phase, 2nd day (Mathematics test), questions M01 to M05. Official proof available in the FUVEST collection. FUVEST does not publish a template for the 2nd phase; The resolutions below are ours. Question 1: Parking Surveillance A rectangular parking lot has dimensions of 40 m by 100 m, where security cameras have been installed that cover specific areas. The problem involves calculating areas and percentages. The owner installed 4 security cameras distributed as shown in the figure. The cameras cover the following regions: