pleez help this innocent girl LOL

Innocent girl ?  where is she????     Can't see her here. :)

Where is Zegroes superior intellect when we need it ??

--------------------------------

1.66242 x 10⁸ km² 

average depth of 3.940 x 10³m which is   3.94 km

$$V=1.66242\times 10^8 \times 3.94 \;\;km^3$$

$${\mathtt{1.662\: \!42}}{\mathtt{\,\times\,}}{\mathtt{3.94}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{8}}} = {\mathtt{654\,993\,480}}$$      km^3

I don't know how many figures are significant :/   I only just saw that bit :(

Maybe Chris can help here ?

sorry i have to say it, Z! but. melody is purty smart! LOL

Thanks, Melody! :)

Ah thank you melody! I was just about to post my answer too darn it! Oh well next time......

surreee ya did.. melody, see what i have to deal with!

Chris we need you.  I don't know how many figures are significant.  Can you help?

Hi Brittany,

Yea we all have to 'cope' with Zegroes.  Just be glad that you are not his parent.    LOL  :))

You can all say what you want! But you guys know ya love me

phew! i dont know what i'd do.

i mean, hi zegroes! of course I would like to be ur parent! O.O

maybe... :)

maybe not... :/

u never know.

Yea you are pretty special zegroes :))

Do you like the little yellow bus?

is it just me or does anybody know what the little yellow bus is? im so lost lol

just jealousy. Pure jealousy

Bj its the bus you ride on

i dont ride in a bus. :)

We don't have little yellow buses in Australia.  But on U.S. shows it is the one that takes the 'special' kids to school :)

hahhaha!

Yes in australia they take the short kangaroos obviously

Yes, that is how I used to get to school :))

Well....we can't swear to the "innocent" part....but here goes........

1.66242 x 10⁸ km²  .......there are  10,000,000,000cm^2  in 1 km^2  = 10^10 cm^2 in 1 km^2.......so

1.66242 x 10⁸ x 10¹⁰ = 1.66242 x 10¹⁸ cm^2

As for the second part, we have

 3.940 x 10³m  .......and there are 100 cm in 1 m  = 10² cm

So....

 3.940x 10³ x 10²   =   3.940 x 10⁵ cm

So....putting this all together, we have

1.66242 x 3.940 x 10¹⁸ x 10⁵  = 

654993480000000000000000 cm^3  =

About 6.6 x 10²³ cm^3

P.S. ......check my math, Melody......we Yanks don't deal well with metric units.....!!!

Its ok Chris. Melody already answered this obviously easy question. And i would have answered it too if ya know I wasnt already answering everything else on the forum while yo utwo frolic

haha! calm down, hotshot. Chris loves math. (no one can stop him) LOL

"Little yellow bus"  isn't exactly the correct terminolgy, here......it's known as  the "Short Bus".....LOL!!!

ooooh! Chris told you melody! *Whispers to melody* I think hes still a little sour because you were getting on him even though he cooked your cake

ahhah! yea, melody! watch out for chris!

Thanks Chris,

How do you know how many places are significant.  Since it is in cm^3 surely only 1 place would be significant.

There are 100 cm in a metre and 1000m in a km so that is 100,000 cm in a km

that is  100,000*100,000 =  $$10^5*10^5=10^{10}$$       cm^2 in a km^@

so

The Pacific Ocean has a surface area of 1.66242 x 10⁸ km²           

$$1.66242 \times 10^{8+10}=1.66242 \times 10^{18} cm^2$$

and an average depth of 3.940 x 10³m. 

which is   $$3.940\times 10^{3+2}=3.940\times 10^{5}\;\;cm \qquad Edited$$

Volume is surface area x depth

$${\mathtt{1.662\: \!42}}{\mathtt{\,\times\,}}{\mathtt{3.94}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{18}}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}} = {\mathtt{654\,993\,480\,000\,000\,000\,000\,000}}$$

$$\\$Volume = $ 6.549934800 \times 10^{23}\;\;cm^3\qquad Edited$$

I don't know how many of these are significant  :/

Maybe I will go for 4 since depth has 4

$$\\$Volume = $ 6.550 \times 10^{23}\;\;cm^3\qquad Edited$$             (Thanks Chris)  I think I like 4 sf  :))

There is 1000 m in a km Chris, I think that you lost a zero.

Where is Nauseated.   I am sure he could convert this to imperial minims for us!

We all know that the water in the oceans must be measured in imperial minims !!!!!

There is more cake, you can have another peice Zegroes.

I don't think that Chris is upset with me.  He has probably just got a belly ache from eating too much of his non-depleting cake!

I think you got one too many zeroes in the second part, Melody.....

The depth is 3.940 x 10³ meters   = 3940m

Sinc there are  100cm to a meter, we have

3940m x 100cm  = 394,000 cm  = 3.940 x 10⁵ cm

I think my answer is good.....I don't know what might be considered "significant"....we're probably looking for a "ballpark" number, anyway.....

surprise me. lol

$$\textcolor[rgb]{0,0,1}{\mathbf{Yes, 4\ sig\ figs\ is\ the \ best\ you \ can\ do\ because\ that's\ the\ accuracy\ of\ our \ least\ accurate\ data.}}$$

  ➷➷

You were right Chris, I had put in an extra zero.

And thanks Badinage.  We both agree that 4 s.f. is best :))

Badinage.   Your post is not displaying properly :/

I guess I'm too young to join this conversation.

(My knowledge is still developing)

You have joined in MG and that is fine :)))

Hah, yay!?

claps 2 u, MathsGod... claps 2 u

^ They explain it all...