A = 2πrh + 2πr^2 is the formula. Where A = surface area, r = radius, and h = height. So all we need to know is the outer radius, which is 3.5. Hope this helps you.
They obviously didn't get the family membership pass.
Let c be the number of children, a be the number of adults
5c+30a=185
c+a=12 =>c=12-a
5(12-a)+30a=185
60-5a+30a=185
25a=125
a=5
c=12-5=7
there are 7 children and 5 adults.
I think the answer is c ngl
On the unit circle, the abscise (x) is the cosine and the ordinate (y) = sinus
So y is the sinus
