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Mathematics 9 Online
100kpimpcess:

help ss below

100kpimpcess:

100kpimpcess:

@darkknight

100kpimpcess:

@mrmudd183

breiadabrattzz:

i can give u da um.....formula

100kpimpcess:

i have the formula . . .i need help answering the question

breiadabrattzz:

well...umm.....wht u need help wit

100kpimpcess:

finding the volume woman look at the question .

breiadabrattzz:

ohh...lol

100kpimpcess:

lmao

Florisalreadytaken:

there are 4 BASIC steps 1) find the volume of the WHOLE cylinder 2) find the volume of the cone 3) find the volume of the hemisphere 4) execute this: \[ \text{Volume of cylinder}-(\text{volume of cone}+\text{volume of hemisphere}) \] its just formulas so not worth writing them down -- can you work it out?

100kpimpcess:

i have the formulas written down .

100kpimpcess:

@snowflake0531 can u help me

breiadabrattzz:

im so confused on wht u stuck on

snowflake0531:

Uhhh do what Flor said "\({Volume ~of~ cylinder}-(\text{volume of cone}+\text{volume of hemisphere})\)" You said that you have the formulas For the cylinder, you have height and radius, you should be able to find that For the cone, the height is 24-6, and the radius is 6 For the sphere it's half of the sphere volume, and radius is 6 With those, plug it into the formulas, and do the subtract and adding

Extrinix:

First you need to figure out the volume of the cylinder, then you have to remove the volume of the cone and the hemisphere, \(V_\text{cylinder}=\pi r^2h\) \(V_\text{cone}=\dfrac{1}{3}\pi r^2h\) \(V_\text{hemisphere}=\dfrac{2}{3}\pi r^3\) simply put these together \(\pi r^2h-(\dfrac{1}{3}\pi r^2h + \dfrac{2}{3}\pi r^3)\) so simply plug it in and solve it, \(\pi (6)^2(24)-(\dfrac{1}{3}\pi (6)^2(24) + \dfrac{2}{3}\pi (6)^3)\) which gives you, \(V_\text{object}=1357in^3\)

100kpimpcess:

the volume of the cylinder is (pi (3.14) r^2) h=b times h

100kpimpcess:

ohh ok i think i undertsand it now

Extrinix:

The equations simplified: \(2714-(905+452)\) which again, gives you \(1357\)

snowflake0531:

1) find the volume of the WHOLE cylinder \[v= \pi r^2 \times h\] \[v= 3.14 \times 6^2 \times 24\] \[ v \approx 2713 \] 2) find the volume of the cone \[ v= \pi r^2 \frac{h}{3}\] \[ v= 3.14 \times 6^2 \frac{24}{3} \] \[ v=904.3 \] 3) find the volume of the hemisphere \[ v = \frac{2}{3} \times \pi \times r^3 \] \[ v=\frac{2}{3}\times 3.14 \times 6^3 \] \[ v=452.2 \] 4) execute this: \[ 2713-(904.3+452.2)\]

100kpimpcess:

i got 1356.5

Extrinix:

Which rounds to 1357, as `I stated already`.

100kpimpcess:

ty

Extrinix:

You're welcome.

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