Question

question 10 (1 point)
which of the following has three significant figures?
305.0 cm
0.0500 mm
1.00081 kg
8.060 × 10^11 m2

Explanation:

Step1: Count significant figures for 305.0 cm

Non - zero digits (3,5) and the zero between non - zero digits (0 between 3 and 5) and the trailing zero after decimal are significant. So, there are 4 significant figures.

Step2: Count significant figures for 0.0500 mm

Leading zeros (before non - zero digit 5) are not significant. The non - zero digit 5 and the two trailing zeros after 5 are significant. So, there are 3 significant figures.

Step3: Count significant figures for 1.00081 kg

All digits (1,0,0,0,8,1) are significant. So, there are 6 significant figures.

Step4: Count significant figures for \(8.060\times10^{11}\) m²

Non - zero digits (8,6) and the zero between them (0 between 8 and 6) and the trailing zero after decimal are significant. So, there are 4 significant figures.

Answer:

0.0500 mm