<h2>
The total front footage of all three lots is 370 ft</h2>
Step-by-step explanation:
Front footage of first lot = 180 ft
Area of each side lot = 19000 ft²
Depth of each side lot = 200 ft
We have
Area = Depth x Front footage
19000 = 200 x Front footage
Front footage = 95 ft
Total front footage = Front footage of first lot + 2 x Front footage of each side lot
Total front footage = 180 + 2 x 95
Total front footage = 180 + 190
Total front footage = 370 ft
The total front footage of all three lots is 370 ft