Can someone help me with these math questions?

Question

anonymous · Answer

what are they

anonymous · Answer

I need help with these questions

anonymous · Answer

http://www.mathcounts4ever.com/math8/chapter8/reteaching_volume_ws.pdf

anonymous · Answer

Page 117

anonymous · Answer

it is not letting me view the link

anonymous · Answer

http://www.mathcounts4ever.com/math8/chapter8/reteaching_volume_ws.pdf

jhonyy9 · Answer

ok the page 117 but what is the question there - there are cons

jhonyy9 · Answer

cones - sorry

anonymous · Answer

Yes I have to find the volume of each cone. Then round to the nearest tenth.

jhonyy9 · Answer

yes i see it now - do you know formula of volum of a cone ?

anonymous · Answer

Not really :(

jhonyy9 · Answer

why not ? you not have learned it again ? so than you not can solving same exercices never

anonymous · Answer

I just got this lesson and my teacehr wants us to work it out

jhonyy9 · Answer

so first you need getting this usfully formula of volume of a cone - do you can get it ?

anonymous · Answer

How?

jhonyy9 · Answer

in your math booke for example - or you have not booke ?

12man · Answer

V=pi * r^2(h/3) this is the formula for finding cone

anonymous · Answer

No let me look

jhonyy9 · Answer

for finding volum of a cone @12man - right ?

12man · Answer

yes

jhonyy9 · Answer

@JMelbourne36 do you understand now this formula what have wrote above @12man ?

12man · Answer

just plug in the radius multiply by 3.14 divide be 3 and multiply by hight

anonymous · Answer

Not really :(

12man · Answer

r= radius half of diameter
pi=3.14
h it the height

jhonyy9 · Answer

ok

the volume of a cone is equal area of base time the height of cone divide by 3 - ok. ?

anonymous · Answer

So divide the cone by 3?

anonymous · Answer

Multiply the base by the height and divide it by 3?

jhonyy9 · Answer

area of the base

12man · Answer

don"t forget the pi 3.14

anonymous · Answer

Multiply the are by the base?

anonymous · Answer

area? Then divide it by 3?

jhonyy9 · Answer

yes V = area of the base time the height of cone divide 3 

ok.?

12man · Answer

try to do number 1

jhonyy9 · Answer

yes but area of the base will be area of a circle

anonymous · Answer

Let me see if I can take a screenshot of the question so I can try to work it out with y'all

jhonyy9 · Answer

@JMelbourne36 not is necessary because i see this page sure right 117

jhonyy9 · Answer

1. height of cone = 4yd
   radius of circle of the base = 2 yd 

yes ?

12man · Answer

V=πr2h
3=π·22·4
3≈16.75516

jhonyy9 · Answer

so how many will be volume of this cone ?

12man · Answer

16.7 is the volume

anonymous · Answer

Which ones do I multiply

jhonyy9 · Answer

@12man please give posobolitie to @JMelbourne36 to learn - ok ? and dont give never directly answers please

anonymous · Answer

attachment

jhonyy9 · Answer

do you can solve the first one please ?

anonymous · Answer

Can you tell me what to multiply one more time please

12man · Answer

you multiply 3.14*2^2*4/3

12man · Answer

2^2 is 2 square

jhonyy9 · Answer

@JMelbourne36 for the first one exercise or for what ?

anonymous · Answer

The first one

jhonyy9 · Answer

@12man please dont interfer again

12man · Answer

sorry @jhonyy9 
bye guys i hope you understand ☻♦☻♣☺

jhonyy9 · Answer

ok. @JMelbourne36 

so for the first one you know that the radius of circle of the base is 2 yd so how many will be area of circle ?

jhonyy9 · Answer

do you know formula for area of the circle ?

anonymous · Answer

No I'm sorry I just do't understand

jhonyy9 · Answer

check it above have wrote there 12man to you

anonymous · Answer

Ok which one is area and which one is the base

jhonyy9 · Answer

the base is a circle - yes ?

area of a circle is = ?

anonymous · Answer

3?

anonymous · Answer

3.14?

jhonyy9 · Answer

|dw:1456080059022:dw|

jhonyy9 · Answer

3,14 is the value of pi

jhonyy9 · Answer

area of base = pi*r^2   where r is the radius of the circle

anonymous · Answer

Ok so multily 3.14 by the area and the base then divide them?

jhonyy9 · Answer

read please what you have wrote above

anonymous · Answer

Sorry. So multiply 3.14 by the base and area then divide them?

jhonyy9 · Answer

so not exactly 

first you need to calculi area of the circle what is the base of cone 

area of circle = pi *r^2

area of base = 3,14*2^2 = ?

anonymous · Answer

3.14 multiplied by 2 to the second power?

jhonyy9 · Answer

yes equal how many ?

anonymous · Answer

12.56

jhonyy9 · Answer

yes nice so than you know now area of the base but the volume of a cone is equal area of the base time the height of the cone

jhonyy9 · Answer

and divide by 3

jhonyy9 · Answer

the height = 4 yd for the first one exercise

anonymous · Answer

So divide 12.56 by 3?

jhonyy9 · Answer

12,56 is area of the base 

yes this is indifferent when you divide it by 3 because you know that a*b/c = (a/c)*b 

yes ?

jhonyy9 · Answer

you can divide the 12,56 by 3 and after this you need multiplie the result by the height of the cone

anonymous · Answer

Excuse I just emailed my teacher she told me tow wait for that lesson but there is another one

jhonyy9 · Answer

sorry ?

jhonyy9 · Answer

ohhh - ok.

anonymous · Answer

I have to find it

jhonyy9 · Answer

to find what ?

jhonyy9 · Answer

this volume ?

anonymous · Answer

My homework paper online so I can do a screenshot

jhonyy9 · Answer

not is what you have attached to this question ?