Answer:
1
Step-by-step explanation:
Length of pencil = 19 cm
[tex]1\ cm=0.393701\ in[/tex]
[tex]\\\Rightarrow 19\ cm=19\times 0.393701\ in\\\Rightarrow 19\ cm=7.480319\ in[/tex]
A number written in the form [tex]m\times 10^n[/tex] then the number n denotes the order of magnitude of that number. The value of m lies between the values
[tex]\frac{\sqrt{10}}{10}\leq m < \sqrt{10}\\\Rightarrow 0.316\leq m<3.16.[/tex]
So,
[tex]7.480319=0.7480319\times 10^{1}[/tex]
Hence, the order of magnitude of the length of a pencil in inches is 1
