Answer:

Step-by-step explanation:
The surface area of a cylinder is given as;

where r = radius
h = height
The cylinder has a height of 32 feet and a diameter of 40 feet. This means that the radius is:
40 / 2 = 20 feet
The surface area is therefore:

The surface area of the cylinder is
.
Answer:
250
Step-by-step explanation:
14 x 4 = 56
56 divided by 2 = 28
<h2>7000 divided by 28 =
250 </h2>
a) 0-32000
1-30000
2-28000
3-26000
4-24000
b)y=-2000x+32000
c) 16 min