Online Course Discussion Forum

Need help on 9.21, 9.23, and 9.25

 
 
Picture of Bober Yang
Need help on 9.21, 9.23, and 9.25
by Bober Yang - Saturday, 14 November 2020, 4:16 PM
 

For 9.21 I have no idea how

For 9.23 I don't know how to find volume for this kind of triangular pyramid.

for 9.25 I don't think it's possible


Can I get some help? thanks