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8.0x10^-8 m to nm ?
80 nm
We know that
##"1 nm" = 1 xx 10^(-9) "m"##
##8.0 xx 10^(-8)"m"## can also be written as ##80 xx 10^(-9)"m"##
So,
##8.0 xx 10^(-8)"m" = "80 nm"##