Question

Дано пирамида
d=6дм
h=15дм
V-?

Answer 1

v=2v
v=1/3s•h
s=1/2a•h a=h 1/2a•a d=6= √2•а => a=6/√2
s=1/2
(1/2)•(6/√2)•(6/√2)=36/4=9
v=(1/3)•9•15=45
v=2v=45•2=90