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# What is 40,000cm squared in km squared?

Also, what is 10 m cubed in mm cubed?

### 6 Answers

- Anonymous1 decade agoFavorite Answer
40 km square

10,000 mm cube

Source(s): my brain, because to convert 40,000 cm square to km square you need to divide 40,000 by 1000 to get the km square and for the 10 m cubed you need to multiply by 1000 to get the mm cubed - ArpitLv 51 decade ago
100000 cm = 1 km = 10^5 cm

1 cm = 10^-5 km

so, 1cmÂ² = 10^-10 kmÂ²

40000 cmÂ²= 40000 * 10^-10 = 4* 10^-6 kmÂ²

Ans: 40000 cmÂ² = 4 * 10^-6 kmÂ²

1 m = 1000 mm = 10Â³ mm

1 mÂ³ = 10^9 mmÂ³

Ans: 10 mÂ³ = 10^10 mmÂ³

- Anonymous1 decade ago
First answer is not correct. There are 10^2 centimeters in a meter, and 10^3 meters in a kilometer, so 10^5 centimeters in a kilometer, and 10^10 square centimeters in a square kilometer. And 40,000 divided by 1E10 is 4E-6.

- 1 decade ago
cm to m : divide 100, cm -squared to m-squared: divide by 100- squared (10000).

m to km: divide by a 1000, m-squared to km squared: divide by a 1000-squared (million- 1000 000)

so the answer will be 40 000 divided by (10 000 x 1000 000).

try the same for the other conversion. (instead of squared, it's cubed).

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- 1 decade ago
I know these are right!

40,000 cm^2 = ? km^2

- 1 m^2 = 10,000 cm^2 (1m = 100cm)

- 1 km^2 = 1,000,000 m^2

- 40000/(10,000*1,000,000) = 4E-6 km^2

10 m^3 = ? mm^3

- 1 m^3 = 1,000,000,000 mm^3 (1m = 1000mm)

- 10*1,000,000,000 = 10,000,000,000 = 1E10 mm^3

You can solve both of these with simple stoichiometry.