2. (i) (i) Express 4.793 and 39.51 correct to
2 significant figures.
(ii) Use your answers in part (i) to estimate
​

I. 4.8; 40

II. 0.12

Explanation:

Given the following numerical values;

a. 4.793 (it is correct to 4 significant figures).

To 3 significant figures, we have;

4.793 = 4.79

To 2 significant figures, we have;

4.793 = 4.8

b. 39.51 (it is correct to 4 significant figures).

To 3 significant figures, we have;

39.51 = 39.5

To 2 significant figures, we have;

39.51 = 40

II. To estimate ;

;