The continuous function $fon$ the closed interval $[2,16]$ has values $in$ the table below. Using the subintervals $[2,6],[6,10],[10,12]$

and $[12,16],$ what $is$ the approximation $of{\displaystyle \underset{2}{\overset{16}{}}}f(x)d(x)$ obtained using a right Riemann sum?

$(Answer$ accurate $to2$ decimal places$)$

$-94$