Finding volume of Square pyramid

AI Thread Summary
The volume of a square pyramid is calculated using the formula V = (1/3) * a^2 * h. A user expresses uncertainty about their solution and seeks confirmation on their calculation. They mention obtaining a volume of 72.92, which they round to 73 cm. Another participant confirms that the calculation method is correct. The discussion emphasizes the importance of understanding the formula and rounding in mathematical solutions.
Kirito123
Messages
124
Reaction score
14

Homework Statement


upload_2016-7-29_19-49-13.png


Homework Equations


V= a21/3 h

The Attempt at a Solution


upload_2016-7-29_19-48-25.png

I may be wrong or right I don't know. I'm pretty sure I did it right.
 
Physics news on Phys.org
What is 72.92 rounded to two significant digits?
 
O its 73cm my bad
 
other then that is the way i did it correct?
 
Yes.
 
Ok thank you.
 

Thread 'Finding the number of ways to arrange identical balls in a circle (3 different colors)'

I tried to combine those 2 formulas but it didn't work. I tried using another case where there are 2 red balls and 2 blue balls only so when combining the formula I got ##\frac{(4-1)!}{2!2!}=\frac{3}{2}## which does not make sense. Is there any formula to calculate cyclic permutation of identical objects or I have to do it by listing all the possibilities? Thanks
View full post »

Thread 'Greatest possible value of a constant in polynomial'

Since ##px^9+q## is the factor, then ##x^9=\frac{-q}{p}## will be one of the roots. Let ##f(x)=27x^{18}+bx^9+70##, then: $$27\left(\frac{-q}{p}\right)^2+b\left(\frac{-q}{p}\right)+70=0$$ $$b=27 \frac{q}{p}+70 \frac{p}{q}$$ $$b=\frac{27q^2+70p^2}{pq}$$ From this expression, it looks like there is no greatest value of ##b## because increasing the value of ##p## and ##q## will also increase the value of ##b##. How to find the greatest value of ##b##? Thanks
View full post »

Similar threads

Question about an 8th grade math problem
Replies
20
Views
2K
Area of interior triangle of pyramid normal to a side length
Replies
3
Views
2K
How many ping pong balls would fit into the Great Pyramid?
Replies
6
Views
2K
Solving for Side Length of Right Pyramid with Height/Volume
Replies
1
Views
12K
Finding length in regular pyramid
Replies
4
Views
3K
Volume Of Intersection Between Square Pyramid And Sphere
Replies
15
Views
3K
MHB Simpsons formula and the volume of a pyramid frustum
Replies
4
Views
2K
Lateral Area and Volume of a Pyramid
Replies
1
Views
5K
MHB [ASK] Find the volume of Pyramid in a Cube
Replies
6
Views
2K
Force to lift a pyramid that is sitting in a water tank
Replies
9
Views
3K

Hot Threads

Recent Insights

Back
Top