Geometry - Circle Area, Sectors and Donuts - Intro

50 Topics, 5 Skills

Part Circle - Full Area and Fraction to Part Area (Decimal)

Topic 1

Part Circle - Full Area and Fraction to Part Area (Pi Value)

Topic 2

Part Circle - Part Area and Fraction to Full Area (Decimal)

Topic 3

Part Circle - Part Area and Fraction to Full Area (Pi Value)

Topic 4

Circle Sector From Fraction to Area (Equation)

Topic 5

Circle Sector From Fraction to Area (Equation)

Topic 6

Circle Sector From Fraction to Area (Closest Integer)

Topic 7

Circle Sector From Angle to Area (Equation)

Topic 8

Circle Sector From Angle to Area (Equation)

Topic 9

Circle Sector From Angle to Area (Closest Integer)

Topic 10

Circle Donut From Both Radii to Area (Equation)

Topic 11

Circle Donut From Inner Radius and Area to Outer Radius (Equation)

Topic 12

Circle Donut From Outer Radius and Area to Inner Radius (Equation)

Topic 13

Circle Sector From Arc Length to Area (Equation)

Topic 14

Circle Sector From Arc Length to Area (Equation)

Topic 15

Circle Sector From Arc Length to Area (Closest Integer)

Topic 16

Circle Sector From Area to Fraction (Equation)

Topic 17

Circle Sector From Area to Fraction (Equation)

Topic 18

Circle Sector From Area to Fraction (Closest Integer)

Topic 19

Circle Sector From Area to Angle (Equation)

Topic 20

Circle Sector From Area to Angle (Equation)

Topic 21

Circle Sector From Area to Angle (Closest Integer)

Topic 22

Circle Sector From Area to Arc Length (Equation)

Topic 23

Circle Sector From Area to Arc Length (Equation)

Topic 24

Circle Sector From Area to Arc Length (Closest Integer)

Topic 25

Part Circle - Full Area and Fraction to Part Area (Decimal)

Topic 26

Part Circle - Full Area and Fraction to Part Area (Pi Value)

Topic 27

Part Circle - Part Area and Fraction to Full Area (Decimal)

Topic 28

Part Circle - Part Area and Fraction to Full Area (Pi Value)

Topic 29

Circle Sector From Fraction to Area (Equation)

Topic 30

Circle Sector From Fraction to Area (Closest Integer)

Topic 31

Circle Sector From Fraction to Area (Closest Integer)

Topic 32

Circle Sector From Angle to Area (Equation)

Topic 33

Circle Sector From Angle to Area (Closest Integer)

Topic 34

Circle Sector From Angle to Area (Closest Integer)

Topic 35

Circle Donut From Both Radii to Area (Closest Integer)

Topic 36

Circle Donut From Inner Radius and Area to Outer Radius (Closest Integer)

Topic 37

Circle Donut From Outer Radius and Area to Inner Radius (Closest Integer)

Topic 38

Circle Sector From Arc Length to Area (Equation)

Topic 39

Circle Sector From Arc Length to Area (Closest Integer)

Topic 40

Circle Sector From Arc Length to Area (Closest Integer)

Topic 41

Circle Sector From Area to Fraction (Equation)

Topic 42

Circle Sector From Area to Fraction (Closest Integer)

Topic 43

Circle Sector From Area to Fraction (Closest Integer)

Topic 44

Circle Sector From Area to Angle (Equation)

Topic 45

Circle Sector From Area to Angle (Closest Integer)

Topic 46

Circle Sector From Area to Angle (Closest Integer)

Topic 47

Circle Sector From Area to Arc Length (Equation)

Topic 48

Circle Sector From Area to Arc Length (Closest Integer)

Topic 49

Circle Sector From Area to Arc Length (Closest Integer)

Topic 50

Area of a Circle Sector From Fraction to Area (Equation) (Level 3)

Topic 6

This math topic focuses on calculating the area of a circle sector by converting a sector's fraction of the entire circle into its corresponding area in terms of π. It involves working with different radius values and different fractions of circles to determine the areas of the sectors. The questions in this topic illustrate practical application of the formula for the area of a sector: \( A = \frac{\theta}{360} \pi r^2 \), where \( \theta \) is the central angle in degrees, and \( r \) is the radius of the circle. Each problem presents multiple choice answers, enhancing understanding of circle geometry, specifically sectors.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Circle Sector From Fraction to Area (Equation)

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


Find the area (in terms of π) of the green shaded sector that covers 2/3 of the circle with radius 5

r=5