I don't know how to do geometry

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Fvffl2019

Mathematics

Description

A steel rod is 1/2 inch in diameter and 58 feet long. What is its volume. Use 3.14 round to the nearest tenth

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Explanation & Answer

Thank you for the opportunity to help you with your question!

To find the volume of the steel rod, you need to use the equation for a cylinder:

V=(3.14)*(r^2)*(h)       This is V=area of circular base * height of rod

r=radius of circular base

h=height of rod

Before using the equation you need to make sure all the units are the same, in this case, inches.  And calculate the radius from the diameter.

r=(1/2)*d=(1/2)*(1/2)=0.25 inches

h=58 feet * (12 inches / 1 foot) = 696 inches

Now plug into the formula:

V=(3.14)*(0.25^2)*(696)

V=136.59

Volume=136.6 inches^3

Please let me know if you need any clarification. I'm always happy to answer your questions.


Anonymous
I was struggling with this subject, and this helped me a ton!

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