4.Report your answer in correct significant figures.

Question

A.1.32*10^4cm+2.1*10^2

Answer 1

Rules for addition and sig figs are that you go by the decimal place. 2.1 has 1 decimal place. So the answer has to have 1 decimal place as well. 1.3*10^4.

Answer 2

And you have what? Show your work and explain what you don't understand.