I’m positive that the answer is 40
To find the answer you have to find the area of the fountain using A= pi r^2.
=(3.14)(64)
=200.96
Then you have to find the area of the big circle.
=(3.14)(11^2)
=379.94
Then subtract them both (379.94-200.96) and you get the answer 178.98 which can be rounded to 179 aka A.
Answer:
a)
b)
Step-by-step explanation:
Given that
C = 100 + 25 x - 120 ln x ,x ≥ 1.
The average cost function given as



Therefore

To find average minimum cost



100 + 120 (1-lnx) = 0

ln x =1.833

x=6.25


Because it’s an isosceles triangle, m