Question

Convert 84mm2 in cm2

Answer 1

1cm=10mm

to convert cm to mm you have to multiply the number by 10

to convert mm to cm you have to divide the number by 10

in this question we have to convert mm to cm so, we have to divide 84 by 10,

84mm2÷10=8.4cm2

answer=8.4cm2
hope this helps......

Answer 2

Answer: 8.4.
Here is a trick to know how to solve stuff like this:
K H D M D C M<--------(You could also remember it by "Kangaroos Hopping Down Mountains Drinking Chocolate Milk).

Here's what they stand for:
Kilo  Hecta   Deca   Meters, Liters, or Grams   Deci    Centi    Milli

Now, you do this:
K H D M D C M
                     84
You put 84 under "Milli", since it's 84 millimeters . Now, you go to da LEFT, and you move da decimal to da LEFT. (Every whole umber automatically gets a decimal at da end of it. Example: 72 is da same as 72.) (Decimal is at da end of 72). So now, 84 is under centi, (in this case, centimeters), and you move da decimal ONCE, since you moved from milli to centi ONCE. Now it would be 8.4. Since da problem only asked for centimeters, YOU'RE DONE! :-).