Lengths
What is Length?
In mathematics, length is a measurement of the extent of an object or distance from one point to another. It is a fundamental concept in geometry and is often measured in units such as centimeters, meters, inches, feet, or yards.
Measuring Length
There are various tools used to measure length, including rulers, tape measures, and meter sticks. When measuring length, it's important to use the appropriate units and be precise in the measurement.
Units of Length
Common units of length include:
- Millimeter (mm)
- Centimeter (cm)
- Meter (m)
- Kilometer (km)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
Converting Units
To convert between units of length, you can use conversion factors. For example, to convert from centimeters to meters, you can use the conversion factor 1 meter = 100 centimeters. Similarly, to convert from inches to feet, you can use the conversion factor 1 foot = 12 inches.
Perimeter
In geometry, the perimeter of a shape is the total distance around its outer boundary. To find the perimeter of a shape, you can add up the lengths of all its sides. For example, the perimeter of a rectangle is given by the formula: P = 2l + 2w, where l is the length and w is the width.
Study Guide
To study lengths effectively, it's important to:
- Understand the concept of length and its importance in geometry.
- Be familiar with the common units of length and their relationships (e.g., 1 meter = 100 centimeters).
- Practice measuring length using different tools and units.
- Learn how to convert between units of length using conversion factors.
- Understand how to find the perimeter of shapes and apply the appropriate formulas. .
◂Math Worksheets and Study Guides Seventh Grade. Rational and Irrational Numbers
Worksheet/Answer key
Worksheet/Answer key
Worksheet/Answer key