Problems finding out the area of a 0.5mm circle.

Problems finding out the area of a 0.5mm circle.

After doing the following equation 3.14 x 0.25 x 0.25, I get an area of
0.1963mm and I need the answer to be in nanometers thus I convert it,
with the result being 196300 nano meters

However when I try working out the same area (0.5 circle) using nano
meters in the initial equation instead of mm (3.14 x 250,000 x 250,000)
I get a bigger area of 196250000000 nano meters, which converts to
196300mm!

Why is the area of a 0.5mm circle bigger when I work out the area in
nanometers rather than mm?

I also need to know how many 100 nano meter circles I can fit into a
500,000 nanometer (0.5mm) circle, and I assume I simply divide
196250000000 by 100?

Thanks for your help

.

Relevant Pages

  • Re: Problems finding out the area of a 0.5mm circle.
    ... > Problems finding out the area of a 0.5mm circle. ... > 0.1963mm and I need the answer to be in nanometers thus I convert it, ... > I get a bigger area of 196250000000 nano meters, ...
    (uk.education.maths)
  • Problems finding out the area of a 0.5mm circle.
    ... Problems finding out the area of a 0.5mm circle. ... 0.1963mm and I need the answer to be in nanometers thus I convert it, ... I get a bigger area of 196250000000 nano meters, ...
    (uk.education.maths)
  • Re: Problems finding out the area of a 0.5mm circle.
    ... 0.1963mm and I need the answer to be in nanometers thus I convert it, with the result being 196300 nano meters ... However when I try working out the same area (0.5 circle) using nano ... I get a bigger area of 196250000000 nano meters, ...
    (sci.math)
  • Re: Problems finding out the area of a 0.5mm circle.
    ... >Problems finding out the area of a 0.5mm circle. ... > 0.1963mm and I need the answer to be in nanometers thus I convert it, ... >I get a bigger area of 196250000000 nano meters, ...
    (sci.math)
  • Re: Problems finding out the area of a 0.5mm circle.
    ... > Problems finding out the area of a 0.5mm circle. ... > and I need the answer to be in nanometers thus I convert it, ... > I get a bigger area of 196250000000 nano meters, ...
    (uk.education.maths)