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Study Guides > Prealgebra

Summary: Exploring the Relationship Between Decimals and Fractions

 

Key Concepts

  • Convert a Fraction to a Decimal To convert a fraction to a decimal, divide the numerator of the fraction by the denominator of the fraction.
  • Properties of Circles ... [latex]r[/latex] is the length of the radius[latex]d[/latex] is the length of the diameterThe circumference is [latex]2\pi r[/latex] . [latex]C=2\pi r[/latex]The area is [latex]\pi {r}^{2}[/latex] . [latex]A=\pi {r}^{2}[/latex]
 

Glossary

circumference of a circle
The distance around a circle is called its circumference.
diameter of a circle
A diameter of a circle is a line segment that passes through a circle’s center connecting two points on the circle.
radius of a circle
A radius of a circle is a line segment from the center to any point on the circle.
repeating decimal
A repeating decimal is a decimal in which the last digit or group of digits repeats endlessly.
 

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