Answer with Step-by-step explanation:
The volume of a rectangular pyramid is given by:
V=lbh/3
Where l is the length
b is the breath
and h is the height.
Now, l',b' and h' be new length,breath and height
Then, l'=3l
b'=b
and h'=h/7
New volume=V'=l'b'h'/3
= [tex]\dfrac{3l\times b\times \dfrac{h}{7}}{3}[/tex]
= [tex]\dfrac{lbh}{7}[/tex]
Hence, Volume formula which reflects these changes is:
[tex]\dfrac{lbh}{7}[/tex]
