Force vec$(F)=(8\mathrm{.}61N)hat(i)-(6\mathrm{.}95N)hat(k)$ acts on a pebble with position vector vec$(r)=(1\mathrm{.}21m)widehat(j)-(8\mathrm{.}82m)hat(k),$ relative to the origin. What is the resulting torque acting on the pebble about $($a$)$ the origin and $($b$)$ a point with coordinates $)?$

$($a$)$ Number

$-8\mathrm{.}4095$

$-75\mathrm{.}9402$ widehat$(j)$

i

$10\mathrm{.}4181$ widehat$(k)$ Units $$

$($b$)$ Number $$ hat$(i)$

$$ hat$(j)$

i

widehat$(k)$ Units $$