How Do You Solve Circle Math Problems?
Learn how to identify and solve circle questions. Knowledge can be used for tests such as the SAT, PSAT, and ACT. Know your terms. Radius (r): segment drawn between the center of a circle and a point on that circle Diameter (d): chord that passes through the center of the circle Chord: segment draw between two points on a circle Circumference: distance around the entire edge of a circle Arc: curved section of the outside of a circle Sector: fractional part of a circle’s area, like a slice of pizza Know your rules. Area of a Circle = Πr2 Area of a Sector = n°/360° × Πr2 Circumference of a Circle = 2Πr or Πd SAMPLE SAT PRACTICE QUESTIONS FOR CIRCLES 1.If the radius of circle O is 4, then what is the area of sector ST?
