# Homework 27


## 2.16

Question:

When measuring the mass of a cat that weighs around 4530 g that is placed on a scale that has markings at every 0.01 kg, which is the correct measurement reported on this scale?

1. 4.5 kg
2. 4.53 kg
3. 5 kg
4. 4.534 kg

Strategy:

First you have to convert grams to kg because the scale is measured in kg. Once it is concerted to kg, you have to remember that when reading a scale, you need to read on sig fig past where the markings read.

$4534g \cdot \frac{1kg}{1000g} = 4.53 kg$

The grams will cross out to leave you with kg as the units. Since the the scale reads to the 0.01 kg, it would read as a clear marking at 4.53, and you would estimate the next number at the 0.001 kg. That being said the only answer that reads to that is D) 4.534 kg.

3.69

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