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Circumferences & Areas of Circles. Circle information Defn: Points on a plane that are equidistant...
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Circumferences & Areas of Circles
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Transcript of Circumferences & Areas of Circles. Circle information Defn: Points on a plane that are equidistant...
Circumferences & Areas of Circles
Circle informationDefn: Points on a plane that are equidistant from a given point (CENTER).Radius: From center to point on the circleDiameter: 2 times the radius
r
d
Circle CircumferenceC = 2r
5 in
Circle CircumferenceC = 2r
5 in
31.42 in
Circle CircumferenceC = 2r
7cm
Circle CircumferenceC = 2r
7cm
43.98 cm
Circle Circumference
C = 2r
14’
Circle Circumference
C = 2r
14’43.98 ft
Circle Circumference
C = 2r
6’
Circle Circumference
C = 2r
6’18.85’
Circle AreaA = r2
5 in
Circle AreaA = r2
5 in
78.54 in2
Circle AreaA = r2
7cm
Circle AreaA = r2
7cm
153.94 cm2
Circle AreaA = r2
14’
Circle AreaA = r2
14’153.94 ft2
Circle AreaA = r2
6’
Circle AreaA = r2
6’28.27 ft2
Circle AreaFind the area of the shaded region.
5”
2”
Circle Area
Arealarge – Areasmall =
Areashaded
5”
2”
Circle AreaFind the area of the shaded region.
6’
3’
Circle AreaFind the area of the shaded region.
3’
