Question

the thickness of a paper is 0.001578 cm. the express it in srandard form

Answer 1

0.001578cm= 0.001578×100=0.1578m
=15.78×10^5m(by dividing and multiplying 100 in 0.1578)

standard form is 15.78×10^5m

Answer 2

standard form of 0.001578 is
1578/1000000= 789/500000
or =1578/10^6 =1578×10^-6cm
hope it helps....