Answer:
its answer is 20
Step-by-step explanation:
as we know,
a=5
b=4
c=7
now,
3(b+a)-c
= 3(4+5)-7(here,putting the value of a,b&c)
=3×9-7
=27-7
=20.
d
because
r^2h and the volume of a Cone is V=1/3
