Question

Does 10cm(squared) converted into millimetres(squared) equal this?

#1 + 10^3

Answer 1

It is `"multiplication"`, not addition

It should be `1 xx 10^3`

Explanation:

`"10  cm"^2 = "1000  mm"^2`

In scientific notation, `1000 = 10^3`

So `"1000  mm"^2 = 1xx10^3" mm"^2"`

Answer 2

`10cm^2 =1000mm^2`

(Multiply by `100` to convert area from `cm^2 " to " mm^2`)

Explanation:

When you are working with lengths (which is one-dimensional), then:

`1 cm = 10mm` and `10 cm = 100mm`

However, when you are working with area it is two-dimensional.
This means that when you convert from cm to mm you have to do it in BOTH directions, so `xx10 and xx10 = xx10^2`

From `cm^2` to `mm^2` you have to multiply by `100`

`10cm^2 = 10xx100 mm^2 = 1000mm^2`