I'm probably making this harder than it actually is, but I'm not sure.
(6.98cm - 2.83cm) X 1.7 sq. cm
Do I just multiply 4.15 cm by 1.7 sq. cm or do I need to convert 4.15 to sq. cm first?
(Oberserving significant digits, would it be 7.1 sq. cm?)
Thanks for your help!
2007-07-19 15:55:48 · 4 answers · asked by Steven M 3 in Science & Mathematics ➔ Chemistry
You can multiply it as it its. But you will need to report the units of the results as cubic cm. For example, you have a square and you are calculating the area: you multiply 2 sides and and report ur result as sq cm. If you were calculating volume, you multiply 3 sides and report cubic cm.
2 significant figures,, as you are multiplying a 2 sig fig number by a 3 sig figure number, the less sig figures in the measurement are reported. To put in a simple way, you don't know the third sig figure of that number, so you won't know the third sig figure in the result cuz ur still lacking the certainty of it
2007-07-19 16:02:26 · answer #1 · answered by Anonymous · 1⤊ 1⤋
When you multiply numbers, you multiply units.
So cm * cm^2 leads to cm^3
2007-07-19 23:06:42 · answer #2 · answered by cattbarf 7 · 1⤊ 0⤋
Just multiply. Your final units will be cm^3 (cubic cm), and you should probably go to significant digits before you multiply. (I think)
2007-07-19 23:00:28 · answer #3 · answered by William D 5 · 1⤊ 0⤋
No, multiply your 4.15 by 1.7cm² ...your answer will be in cm³.
= 7.06cm³
2007-07-19 23:09:03 · answer #4 · answered by Norrie 7 · 1⤊ 0⤋