In the $ABCD-PQRS$ parallelepiped shown, $AH=\sqrt{39}$, $HS=\sqrt{57}$. Calculate its volume ($H$ belongs to base). (Answer:$V=220,5\sqrt{13}$) My progress: I can only discover AS $SAS^2 =39+57 \implies AS = \sqrt{96} \therefore AS = 4\sqrt6$ but i can't find the base area.. Missing any informa...

OCR A Level Further maths: mechanics, Year $1.$ Chapter $4$ Section $2$: Acceleration in horizontal circular motion. $\omega$ is angular speed and is defined as $\frac{d\theta}{d t},$ sometimes written as $\overset{.}{\theta}.$ An equation for linear (tangential) speed is then derived and is giv...