Are = radius squared times pie so 12*12 = 144 so 144 times pi 3.14*144 = 452.16 is your answer
Answer:
d) 1.25 g
Step-by-step explanation:
If it has a half life of 40 days, there will be 5 half-lives in that span of time so if you divide 40 by 2, 5 times or just
, it will equal 1.25.





D=100:
g=12-1/25(100)
g=12-4
g=8, d=100
d=200:
g =12-1/25(200)
g=12-8
g=4, d=200
d=300:
g =12-1/25(300)
g=12- 12
g=0, d=300
Y= subscribers
X= months
Every month she gets 12 new subscribers, she has 65 right now.
12x+65= y
H would be your answer.
I hope this helps!
~kaikers