Answer: [tex]6.48 \times 10^2[/tex]
Step-by-step explanation:
Since, According to the question,
The leak in a water tank causes the water level to decrease by [tex]3.6\times 10^{-2}[/tex] millimeter
That is , in 1 second it decreases [tex]3.6\times 10^{-2}[/tex] mm
⇒ In [tex]1.8\times 10^4[/tex] seconds it will decrease [tex]3.6\times 10^{-2}\times 1.8\times 10^4[/tex] mm
⇒ In [tex]1.8\times 10^4[/tex] seconds it will decrease [tex]6.48\times 10^{2}[/tex] mm