Answer:
if I read your screen correctly
[tex]F radius = 5 x {10}^{-8 } [/tex]
[tex]Sr radius = 2 x {10}^{-7} [/tex]
40
Step-by-step explanation:
divide the larger one (Sr) by smaller one (F)
the coefficient = 2/5
the exponent = -7-(-8)
can you get the answer from there, don't forget to simplify
