paolasanchezruiz123 paolasanchezruiz123
  • 11-11-2020
  • Chemistry
contestada

What is 13.48cm+7.6cm rounded to the correct number of significant figures?

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LandMarkStudios
LandMarkStudios LandMarkStudios
  • 11-11-2020
The lowest amount of significant figures has to be what the answer is...

7.6cm is 2 sig figs where 13.48 is 4, so the answer can only really be as precise as the smallest one (7.6)

7.6 + 13.48 = 21.08cm

Put it into 2 sig figs makes it
=21 cm (2s.f) <— don’t forget to write 2 sig figs next to it because otherwise it is a false answer
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