anonymous one year ago What is the exact volume of the cylinder? A. 156 m3 B. 312 m3 C. 1872 m3 D. 2028 m3

1. anonymous

its A right

2. Haseeb96

how can we find it because there is no any information given in this question

3. anonymous
4. anonymous

Well the volume of a cylinder is $\pi * r ^{2} * h$

5. anonymous

sorry open study is being annoying

6. anonymous

13*12 152

7. anonymous

By any chance, do those answer choices have a "pi" in them?

8. anonymous

yes

9. anonymous

156 pi m3 all of them

10. anonymous

Well then it's not A. You have to do pi * r^2 * h (which is 12^2 * 13 * pi)

11. anonymous

so then C

12. Flvs.net

I agree with comupter

13. MrNood

so instead of guessing look at the drawing what is r? What is r^2 (r * r)? What is h? Use the formula given above

14. anonymous

i keep messing up

15. anonymous

i dont get it

16. MrNood

it is a simple multiplication pi * r *r * h put the values for that into your calculator. If you keep messing up ,then practice until you don't

17. anonymous

Well, as @MrNood said, you have to identify the parts of the cylinder and then use the formula. Here is a diagram for the parts of a cylinder. http://www.numberempire.com/shapes/images/cylinder_main.png

18. anonymous

12*12 144*1872 it is C

19. anonymous

@ComputerNerd ?

20. anonymous

am i right

21. anonymous

Yes

22. anonymous

thanks

23. MrNood

12 * 12 *13 * pi = 1872 pi m^3

24. MrNood

you need to be precise