## LaShai 3 years ago Solve V = π r2h for h.

1. DarkendSinz30

V = 2(pi)rh Divide by 2(pi)r on both sides V/2(pi)r = 2(pi)rh/2(pi)r V/2(pi)r = h h = V/2(pi)r

2. DarkendSinz30

3. LaShai

I'm confused

4. DarkendSinz30

your trying to find H correct?

5. LaShai

yes

6. DarkendSinz30

what it is telling you to do is divide both sides of the equation by 2(pi)r to get the value of H

7. DarkendSinz30

Look how the equation is written and it explains how it is done

8. LaShai

okay I get what you did now

9. DarkendSinz30

that is how for these equations if you are trying to find the value the correct way should be how it is done!

10. LaShai

Thank you

11. DarkendSinz30

12. LaShai

I have another question. Solve P = 2(l + w) for l. What are the missing values in the table? P w l 14 2 ? 22 8 ?

13. DarkendSinz30

14. DarkendSinz30

Basically distribute the 2 with the l and w, so you end up with an equation of P = 2l+2w. Since you have the values for P and W, you can just plug them in, so the only term left would be "l". Does that make it more clear?

15. DarkendSinz30

all you have to do is move the constants to one side and make "l" by itself, that would be your solution to "l".

16. LaShai

you had me up until you said plug in

17. DarkendSinz30

place the number that is already given

18. LaShai

okay

19. DarkendSinz30

got it

20. LaShai

yeah I got p-2w/2=l but how do I plug them in

21. DarkendSinz30

type them in

22. LaShai

So 8 and 14 is my answer for l