Question

Round off each of the following quantities to two significant figures 1.43 cm3

Answer 1

The two significant figure of 1.43 will be 1.4 cm3.

Two significant figures we have to take two digits. But it is not applied in every digits.

For example :

In 0.0026, there are only two significant figures as we don't count the zeroes of the zeroes are not between non-zero digit.

In 1.430, there are 4 digits that are significant. Here, we count the zero because it is in the right of the decimal point.

Answer 2

1.43 cm³ can be simplified as 1.4 cm³