Answer:
82.47
Step-by-step explanation:
area of fountain: 201.06(see photo 1)
area of fountain and walkway:283.53(see photo 2)
area of walkway:82.47(subtract fountain area from fountain and walkway)
4 * 2 * 2 * 2 = 32 bacteria
Hope it helps!
8.49 x 10⁻⁷ = 0.000000849