Multiply, we are doing significant figures, and the answer has to be rounded(to the number of that has the least amount of signficant values.
18.2cm*8.4cm
help??
2006-09-14 10:28:52 · 4 answers · asked by Stephanie 3 in Education & Reference ➔ Homework Help
Yes its chemistry.... this is what im doing in chem class now..
2006-09-14 10:34:53 · update #1
explain please
2006-09-14 10:35:33 · update #2
1.5 x 10^2 cm2
when you have a number greater than the allowable significant figures, you use scientific notation to show the number and then multiply it by 10 raised to a power. So to round 152.88 cm2 to two significant figures, you would take the 1.5 (2 or 3 is less than 5 so it stays rounded down) then you multiply it by 10 raised to the second power (10^2) because you moved the decimal two places to the left.
2006-09-14 10:44:37 · answer #1 · answered by cinquefoil_solis 3 · 0⤊ 0⤋
18.2 cm (3 sig digs) x 8.4 (2 sig digs) = 152.88 cm2
answer must be rounded to 2 sig digs, so you'll need scientific notation --> 1.5 x 10E2 cm2
2006-09-14 17:46:26 · answer #2 · answered by wibblytums 5 · 0⤊ 0⤋
Are you sure this is Chemistry?
2006-09-14 17:31:57 · answer #3 · answered by Bruce W. 4 · 0⤊ 0⤋
153cm
2006-09-14 17:34:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋