CHAPTER 3. GEOMETRY

277.

O

~ P

o= =

=

278. 
     

     p=S~O=

     
     


279. 
     

     s=~P==

     
     

     =

     
     

3.23 Rectangular Parallelepiped

=

bÇÖÉëW=~I=ÄI=Å==

aá~Öçå~äW=Ç=

pìêÑ~ÅÉ=~êÉ~W=p=

sçäìãÉW=s=

=

=

===== =

=

Figure 38.

=

280. 
     

     Ç= ~O+ÄO+ÅO=

     
     


281. p=O()~Ä+~Å+ÄÅ =

=

282. s=~ÄÅ==