Discussion :: Center of Gravity and Centroid - General Questions (Q.No.4)
Determine the volume of concrete needed to construct the circular curb.
Answer: Option A
No answer description available for this question.
|Vanessa said: (Jan 24, 2015)|
|Could anyone please explain how to properly approach this problem using the Pappus-Guldinas theorem.|
|Jack said: (Dec 28, 2015)|
|I didn't use the Pappus-Guldinas theorem but I solved this question by using basic mathematical formulas.
Firstly, I found the interior side which sees the angle is 45 degree from (45*(2*pi*(18+0.4m))/360. Then with the same way I found the exterior side. And the I calculated the volume of the bottom part.
Finally, I calculated the volume of the upper part and addition of two volume and I got 1.073 m^3. I chose the nearest option C.
|John said: (Jan 18, 2016)|
|I solved using Pappus theorem. I got 1.079, I choose A.|
|Susheel said: (Feb 29, 2016)|
|Tell me the Pappus theorem.|
|Katharnak said: (Jul 12, 2017)|
|I think Sambar approach is better than Pappus.|
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