Answer:
Step-by-step explanation:
3y+y = 26-6
4y = 20
4y/4 = 20/4
y = 5
Answer:
942.48
Step-by-step explanation:
V=πr^2h=π·5^2·12≈942.4778
(A ∩ B) means "A intersection B". Your problem statement tells you the intersection contains
{3, 4}
so for the 1st one triangle is 8
diamond is 3
and star is 11
the second one star is 5
diamond is 5
and triangle is 2 again
and for the last one well try to do it yourself and if you cant do it comment on this =)
The answer to the question is 8.25