Answer:
[tex]8.51\times10^{-3}[/tex]
Step-by-step explanation:
Diameter of body cell : [tex]5.1\times10^{-4}[/tex]
Diameter of plant cell : [tex]8\times10^{-3}[/tex]
So, combined diameter of body cell and plant cell :
[tex]5.1\times10^{-4}+8\times10^{-3}[/tex]
[tex]10^{-3}(5.1\times10^{-1}+8)[/tex]
[tex]10^{-3}(0.51+8)[/tex]
[tex]10^{-3}(8.51)[/tex]
[tex]8.51\times10^{-3}[/tex]
Thus the combined diameter of of body cell and plant cell is [tex]8.51\times10^{-3}[/tex]
