Question

The length and breadth of a rectangular sheet are 16.2 cm and10.1cm, respectively. The area of the sheet in appropriate significant figures and error is

(a) 164 ±3 cm²(b) 163.62 ± 2.6 cm²(c) 163.6 ± 2.6 cm²(d) 163.62 ± 3 cm²

Answer 1

Area of the rectangular sheet = 16.2 x 10.1 = 163.62

Since, the number of significant digits after the decimal in 16.2 and 10.1 is 1 each, therefore, the number of digits after the decimal should be 1, therefore, the answer is 163.6.

Since, there are no errors given the error in the area cannot be calculated.