The Solution:
Given:
[tex]\begin{gathered} mean=1.02m \\ number=7\text{ sticks} \end{gathered}[/tex]By formula,
[tex]mean=\frac{total}{number}[/tex][tex]\begin{gathered} 1.02=\frac{total}{7} \\ \\ Cross\text{ multiply to get:} \\ \\ total=7\times1.02=7.14m \end{gathered}[/tex]Therefore, the correct answer is 7.14m
