Question

The length, width, and height of a right rectangular prism are doubled. What will be the effect on the volume of the prism?

Answer 1

For my answer I got 264pi m^2

Answer 2

I feel I'm off by 100.

Answer 3

if you have a 1 by 1 by 1 square, the volume is 1
if you have a 2 by 2 by 2 square, the volume is 8

Answer 4

What about with that odd figure that I'm given in the question?

Answer 5

i am confused, because you question in the box is a general one, and your picture is a specific one
are you supposed to find the area of that shape?

Answer 6

Yeah. The surface area of the composite figure.

Answer 7

ok now i am doubly confused
are you looking for a volume, or a surface area?

Answer 8

Surface.

Answer 9

Mind if I paste the answer choices?

Answer 10

Would that help out? Or?

Answer 11

no that would just confuse me

Answer 12

Yeah... It's difficult on me with my seizure disorder.

Answer 13

I try to do my best in all subjects, and I normally do good, but I must say... math isn't my subject.

Answer 14

i don't know any geometry, but a quick google search tells me the surface area of a cone is \[\pi r(r+l)\]

Answer 15

in your case \(r=6,l=8\) and you have two of them, so one part will be \[12\pi(6+8)\]

Answer 16

or even better \[368\pi\] if you need a decimal, use a calculator
then find the surface area of the cylinder

Answer 17

ok typo there, \[12\times 14=168\] so \[168\pi\] for the two cones

Answer 18

how we doing so far?

Answer 19

168 each or just one is 168?

Answer 20

together

Answer 21

and not \(168\) but \(168\pi\)

Answer 22

Alright. yes, I'm with you.

Answer 23

yeah i know.. i just dont have the pi symbol on my keyboard, but i wrote it down

Answer 24

we can back up if you like

Answer 25

ok now we need the surface area of the cylinder right?

Answer 26

nope, we're doing good so far.

Answer 27

and yes.

Answer 28

that is easier, it is just \(2\pi rh\)
we don't need the sides

Answer 29

here \(r=6,h=14\) so \[2\times 6\times 14\times \pi\]

Answer 30

multiply that out, add it to the previous answer

Answer 31

527.78

Answer 32

yes, but some odd coincidence ii is the same as the area of the two cones

Answer 33

*by

Answer 34

695

Answer 35

i liked your first answer better

Answer 36

527 when added, yea

Answer 37

are your answer choices decimals, or do they use \(\pi\)?

Answer 38

S = 168π m2
S = 48π m2
S = 96π m2
S = 264π m2

Answer 39

hold the phone
the two cones together are \(168\pi\) and the cylinder is also \(168\pi\)
add them up

Answer 40

I had chosen 264 at first, afterwards I chose 168 and just got myself confused earlier.

Answer 41

that'd be 1,000 something

Answer 42

hmm i don't like any of those, maybe we made a mistake
the cylinder by itself is \(2\times 6\times 14\times\pi=168\pi\)

Answer 43

Yeah, that's why I'd been confused for awhile. The curriculum always lists trick answers. Hard to know which one is right a lot of the times.

Answer 44

oooh!!!

Answer 45

i see the mistake !!

Answer 46

the cylinder part is right, but stupidly i included the base of the cone, which is not part of it

Answer 47

Ah, so 168 by itself?

Answer 48

no we still need the cone part

Answer 49

I had that without the cylinder included into it.

Answer 50

that is \[\pi rl=8\times 6\times pi\] and there are two of them

Answer 51

for a grand total of \[96\pi\] for those parts

Answer 52

now add \[168\pi + 96\pi\]

Answer 53

264.

Answer 54

is one choice \(264\pi\)?

Answer 55

Yep. I thought that at first! So thanks for verifying.

Answer 56

whew yw
now i have a question: what kind of pie do you like?

Answer 57

I have about 4 other questions on this thing, but yea.. and oh

Answer 58

Apple or Pumpkin c:

Answer 59

me too

Answer 60

Yeah. I don't really prefer whipped cream though.