2 A rectangular parallelpiped has dimensions $a$, $b$, and $c$ as shown
3 in Figure 3.63. \Part{a} Obtain a vector expression for the face
4 diagonal vector $\vect{R}_1$. \Part{b} What is the magnitude of this
5 vector? \Part{c} Notice that $\vect{R}_1$, $c\khat$, and $\vect{R}_2$
6 make a right triangle. Obtain a vector expression for the body
7 diagonal vector $\vect{R}_2$.
19 xaxis3(Label("$x$"), 0, 1.5a);
20 yaxis3(Label("$y$"), 0, 1.5b);
21 zaxis3(Label("$z$"), 0, 1.5c);
23 draw(xscale3(a)*yscale3(b)*zscale3(c)*unitcube);
24 //Vector A = Vector((0,0,0),