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Do You want to find out what is R(t)?

R(t)

=  (0.02925^(4)-(1/4)*(0.0450484302)*(0.0019812^(4))*(A2)/((1.7*10^(-5))*(0.306)))^(1/4)
time radius R(t)
0 0.02925 0.02925
1 0.029 0.028911
2 0.02875 0.02856
3 0.0285 0.028195
4 0.02785 0.027815
5 0.0274 0.027419
6 0.0271 0.027005
7 0.02635 0.026572
8 0.02615 0.026115
9 0.0255 0.025634
10 0.025 0.025124
11 0.02425 0.024581
12 0.02375 0.023999
13 0.0232 0.023372
14 0.0225 0.022689
15 0.02175 0.021939
16 0.02085 0.021102
17 0.02 0.020153
18 0.019 0.019046
19 0.01725 0.017704
20 0.01545 0.01596
21 0.01315 0.013325
22 0.0085 #NUM!
23 0 #NUM!

The surface  tension value is approx. 0.045 N/m