None.
45000000.0 is a number and, since it is a mathematical number or concept, it does not have any mass at all.
450000000
4.5%% rate:= 450000000/10000000000 * 100%= 0.045 * 100%= 4.5%
450000000 x 2200 = 990,000,000,000 (or 9.9 x 1011 in scientific notation)
It is: 4.5*108
259,200,000
0.0000002222 repeating
450,000,000 + 2,200 = 450,002,200
There are 100000000 angstroms in one centimetre. Therefore, 4.5 centimetres is equal to 450000000 angstroms.
3 TONS
There are 5.6 tons in 5.6 tons.
There are 5.5 tons in 5.5 tons.
12,500 tons