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27 votes
27 votes
need help with all of these questions you see on the top. there the red squares. please someone smart. this is one of the problems I need to finish this tonight.​

need help with all of these questions you see on the top. there the red squares. please-example-1
User Skuge
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3.1k points

2 Answers

28 votes
28 votes

Answer:

2412.7 ft^3

Explanation:

If a circle has a diameter 16ft, it's radius is half that, or 8ft. The are of the circle/base of the cylinder is given by the formula
\pi r^2 where r is the radius. This means the area is 64π ft^2.

To find the volume of a cylinder, you multiply the base area and the height, so the volume would be 64π x 12 which is 2412.74315796. When rounded to the nearest tenth, this is 2412.7.

User JodaStephen
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3.2k points
26 votes
26 votes

Since we want to find the volume of a cylinder:

⇒ must know the formula:
V = \pi r^2h

  • r: radius
  • h: height

Consider the information given:

  • Height: 12 ft
  • Diameter: 16 ft ⇒ Radius: 8 ft (radius is half of the diameter)

Let's solve:


V = \pi r^2*h=3.14*(8)^2*12=2411.52_.cm^3

Answer: 2411.5 cm³

Hope that helps!

User Nakeema
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2.7k points