Question

The cube shown here has volume 1000 cm3. If its edges are all doubled in length its new volume will be
A) 2000 cm^3
B) 4000 cm^3
C) 8000 cm^3
D) 16000 cm^3

( How would i solve this with an equation?)

Answer 1

1. Find the formula for the volume of a cube of side edge s.
2. Using this formula, and the fact that the volume of the given cube is 1000 cubic centimeters, find the length of any one side of this cube, s.
3. Double s. substitute the result into the formula for the volume of a cube.

Answer 2

wouldnt i have to use the Sidexsidexside equation?

Answer 3

Yes. But why not simply look up the formula for the volume of a cube, so that you can be sure?

Answer 4

See this:

https://www.google.com/search?q=volume+of+a+cube&rlz=1C1CHFX_enUS461US461&oq=volume+of+a+cube&aqs=chrome..69i57j0l5.2784j0j7&sourceid=chrome&es_sm=122&ie=UTF-8

Answer 5

yeah but i would have to know what s is. Is S=1000?

Answer 6

Hey: I gave you explicit directions earlier. Have you read them?

Answer 7

Hey mathmale. I'm starting anew. See da new account? haven't gotten in trouble since then. im hoping to keep it up!

Answer 8

hope im not being rude here, lol

Answer 9

nah just came in the right time. Thanks mathmale i'll figure it out from here.

Answer 10

So Mr_Perfection_xD . . . do you have a better way of solving this.

Answer 11

Doesn't A look like da obvious answer? :o or maybe its just a trick.

Answer 12

hahaha funny. Well i tried using mathmales way and i guess i got it. so thanks. I think i got it.

Answer 13

There's absolutely nothing tricky about this question. If you have any serious interest in solving this problem, please follow my suggestions:

1. Find the formula for the volume of a cube of side edge s.
2. Using this formula, and the fact that the volume of the given cube is 1000 cubic centimeters, find the length of any one side of this cube, s.

I still haven't seen your formula for the volume of a cube. It starts with "V= " Please find that formula and type it out.

Answer 14

hmm, yup. a cube has 6 sides right?

Answer 15

and they must be equal in number, so...

Answer 16

V=a^3 is the equation right. I think i got it so thanks. and yes there are 6 sides to a cube.

Answer 17

a thousand divide by 6 ....double the answer by 2 and solve the rest. i think xD LOL

Answer 18

Gon linger around history and english, my better subjects.

Answer 19

thanks

Answer 20

V=a^3 is the equation right. I think i got it so thanks. and yes there are 6 sides to a cube.
True. But why is that relevant here? You are to find the volume of a new cube whose sides are twice as long as those of the previous cube.