Answer:
A=777.54
Step-by-step explanation:
What you do is use the formula which is
a=2pirh+2pir^2.
The radius is half the diameter and the diameter is 15 so you take 15 and divide it by 2 to get 7.5.
The height is 9 m.
A=2(3.14)(7.5)(9)+2(3.14)(7.5)^2=777.54 m.
777.15 m^2
To find the surface area of a cylinder
SA = 2 pi r h + 2 pi r^2
The area of the sides Plus the area of the top and bottom
We know the diameter is 15 so the radius is 1/2 (15) = 7.5
SA = 2 * pi * (7.5) * 9 + 2 * pi * (7.5)^2
= 135pi + 112.5pi
247.5 pi
Approximating pi with 3.14
247.5 (3.14)
-36×+9 is equivalent to this question.
I think it should be B because the depth of the water should be decreasing slowing at the same rate.
