What is the value of $(4times10^-8)times(1times10^-12)$ ?

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Answer 1 · 2016-12-31T13:38:11

$4 xx 10^-20$

This can be rewritten as:

$4 xx 1 xx 10^-8 xx 10^-12$

$4 xx 10^-8 xx 10^-12$

Using the rule for exponents:

$color(red)(x^a xx x^b = x^(a+b))$

$4 xx 10^(-8 + -12)$

$4 xx 10^-20$

What is the value of (4times10^-8)times(1times10^-12)(4times10^-8)times(1times10^-12)?