# What's the biggest thing in the world?

## Question:

What's the biggest thing in the world?

## Scale and Size:

Size on Earth is determined by the ability to hold up under gravity: too large an object would be broken apart by Earth's downward pull. By contrast, the smallest objects on Earth, like dust motes, are attracted to anything with gravity.

## Answer and Explanation:

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There are several ways to think of the biggest things in the world. The biggest animal is the blue whale, which weighs a quarter of a million pounds....

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Applying Scale Factors to Perimeter, Area, and Volume of Similar Figures

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Chapter 13 / Lesson 10
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How do shapes change sizes yet retain their proportions and similarities to other shapes? In this lesson, we'll look at what a scale factor is and how to apply it. We'll consider scale factors with regards to three different aspects of similar shapes: perimeter, area and volume.