Question

In the calculation of the area of a rectangle with dimensions of 4.282 m by 0.050 m, which of the following answers has the correct number of significant figures?

A. 0,214 m2
B. 0,21 m2
C. 0,2141 m2
D. 0,2 m2

Answer 1

B. 0.21 m²

Explanation:

4.282 has 4 significant figures. 0.050 has 2 significant figures. The correctly rounded answer will have the least of these, 2 significant figures: 0.21 m².