<Solid-2024-247>, hint

Let O be the center of BCD, M be the midpoint f BC,  B=1

 cos<AMO=cosX=MO/AM=1/3



Let volume of PQRS, ABCD be V,v

Then V/5v=(PSxPSxPS)/1x5=(125/27)=25/27<1.

작성자:
라벨: ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)