Table of Contents

- 1 What is the ratio of a drawing to real life measurements?
- 2 What is the ratio between two sets of measurements?
- 3 Is the ratio of the size of a model of an object to the size of the actual object?
- 4 What is the scale of ratio?
- 5 What is a comparison of two quantities with different units?
- 6 How do you find the scale ratio?

## What is the ratio of a drawing to real life measurements?

A unit scale is a ratio that compares the dimensions of an actual object to the dimensions of a scale drawing or model that represents the actual object. Neither value in a unit scale has to equal 1.

### What is the ratio between two sets of measurements?

Chapter 5 Vocabulary

A | B |
---|---|

scale | the ratio between two sets of measurement |

scale factor | the ratio used to enlarge or reduce similar figures |

scale drawing | a proportional drawing of an object |

scale model | a proportional model of a three dimensional object |

#### Is the ratio of the size of a model of an object to the size of the actual object?

A unit scale is a ratio that compares the dimensions of an actual object to the dimensions of a scale drawing or model that represents the actual object. Neither value in a unit scale has to equal 1. The unit scale on a map may read 1/2 inch=100 feet.

**What a ratio is when used in scale drawings?**

The scale of drawings is described as a ratio using the notation: A distance at full size : The distance at the scale used that would be the same length. For example: A full size drawing would be 1:1 (or sometimes 1/1 or ‘one to one’).

**How is scale used in real life?**

They are used to create maps and other scale diagrams. When things are too big to draw on paper, scale factors are used to calculate smaller, proportional measurements. Floor plans for house designs are drawn on a smaller scale.

## What is the scale of ratio?

A ratio scale is a quantitative scale where there is a true zero and equal intervals between neighboring points. Unlike on an interval scale, a zero on a ratio scale means there is a total absence of the variable you are measuring. Length, area, and population are examples of ratio scales.

### What is a comparison of two quantities with different units?

A rate is a ratio that compares two quantities with different kinds of units. For example: 120 miles in two hours. Because rates compare quantities with different units, the units must be included when writing or solving rates.

#### How do you find the scale ratio?

The scale factor is commonly expressed as 1:n or 1/n, where n is the factor. For example, if the scale factor is 1:8 and the real measurement is 32, divide 32 ÷ 8 = 4 to convert. To convert a measurement to a larger measurement, simply multiply the real measurement by the scale factor.

**What is a scale model in math?**

A scale model is a representation or copy of an object that is larger or smaller than the actual size of the object being represented.