1.5 deep.
you subtract 2.25 of air space from the total depth 3.75
3.75-2.25=1.5
A prime number is one that's only factors are 1 and itself. So 2 would be a prime number, 11 also, and 19.
Milli means 1000
1 meter=1000 milimeters
therefor
9 times 1 meter=9 times 1000 milimeters
9 meter=9000 milimeters
83 Cents = 2 Quarters, 1 Nickel, 4 Pennies.
Glad I Could Help, And Good Luck!
~AnonymousGiantsFan~