brookeobrien111 brookeobrien111
  • 20-11-2014
  • Mathematics
contestada

what does 3cm by 7cm mean

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bdzski16 bdzski16
  • 20-11-2014
This means 3x7 cm, which is giving you the area of what's inside
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Аноним Аноним
  • 20-11-2014
Say: centimetre=u

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

3u*7u

=3*7*u*u

=3*7*u²

=21u²

=21cm²
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