The first thing we must do for this case is find the grass area:
[tex]A = (22) * (20)
A = 440 feet ^ 2[/tex]
We are now looking for the quantity of snowflakes:
[tex](440) * (1350) = 594000 snow flakes / minutes
[/tex]
We consider the following conversion:
[tex]1 hour = 60 minutes
[/tex]
Therefore, after 1 hour we have:
[tex](594000) * (60) = 35640000 snow flakes / hours
[/tex]
We consider the following conversion:
[tex]1 kilogram = 1000000 miligrams
[/tex]
Therefore, as the mass is 1.90 mg then:
[tex](35640000) * (1.90) * (1/1000000) = 67.716 Kg
[/tex]
Answer:
67.716 Kg of snow accumulates on your lawn per hour
