I don't understand this problem at all! please help
Express the product of 4.0 × 10-2 m and 8.1 × 102 m using the correct number of significant digits.
A.3.2 × 101
B.3.24 × 101
C.32.4
D.30
What is the product of 392 and 0.13592 with the correct significant digits and proper scientific notation?
A.533 × 10-1
B.533
C.5.33 × 101
D.5.328 × 101
Express the product of 4.0 × 10-2 m and 8.1 × 102 m using the correct number of significant digits.
A.3.2 × 101
B.3.24 × 101
C.32.4
D.30
What is the product of 392 and 0.13592 with the correct significant digits and proper scientific notation?
A.533 × 10-1
B.533
C.5.33 × 101
D.5.328 × 101