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The diameter of a cylindrical construction pipe is 5 ft. If the pipe is 27 ft long, what is its volume?
Use the value 3.14 for л, and round your answer to the nearest whole number.
Be sure to include the correct unit in your answer.
27 ft
5 ft


Sagot :

Sure, let's solve this step-by-step.

1. Understand the problem:
- We are given a cylindrical pipe with a diameter of 5 feet and a length (height) of 27 feet.
- We need to find the volume of this cylinder.
- Use the value [tex]\( \pi = 3.14 \)[/tex].
- Round the final answer to the nearest whole number.

2. Recall the formula for the volume of a cylinder:
[tex]\[ V = \pi r^2 h \][/tex]
Where:
- [tex]\( V \)[/tex] is the volume
- [tex]\( r \)[/tex] is the radius of the cylinder
- [tex]\( h \)[/tex] is the height (or length) of the cylinder
- [tex]\( \pi \)[/tex] is a mathematical constant (approximately 3.14 for our calculations)

3. Calculate the radius of the cylinder:
- The diameter of the cylinder is 5 feet.
- The radius ([tex]\( r \)[/tex]) is half of the diameter:
[tex]\[ r = \frac{\text{diameter}}{2} = \frac{5 \text{ ft}}{2} = 2.5 \text{ ft} \][/tex]

4. Use the formula to find the volume:
Substitute [tex]\( r = 2.5 \)[/tex] feet, [tex]\( h = 27 \)[/tex] feet, and [tex]\( \pi = 3.14 \)[/tex] into the volume formula:
[tex]\[ V = 3.14 \times (2.5)^2 \times 27 \][/tex]

5. Calculate the square of the radius:
[tex]\[ (2.5)^2 = 6.25 \][/tex]

6. Substitute and calculate:
[tex]\[ V = 3.14 \times 6.25 \times 27 \][/tex]

7. Multiply the values:
[tex]\[ V = 3.14 \times 6.25 = 19.625 \][/tex]
[tex]\[ V = 19.625 \times 27 = 529.875 \][/tex]

8. Round the final answer to the nearest whole number:
[tex]\[ V \approx 530 \][/tex]

So, the volume of the cylindrical construction pipe is approximately [tex]\( 530 \)[/tex] cubic feet.