circle Flashcards

Circle are

1
Q

Area of circle

A

Pi r^2

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2
Q

Area of semicircle

A

1/2Pi r^2

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3
Q

Area of quadrant

A

1/4 Pi r^2

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4
Q

Area of segment (30-90)

A

Pi r^2theta/360-1/2r^2Sintheta

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5
Q

Area of sector

A

Pir^2theta/360

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6
Q

Are of segment(120)

A

Pi r^2 theta/360- r^2sin theta/2 × cost theta /2

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7
Q

Perimeter of a semicircle

A

Pi r + 2r

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7
Q

Circumference

A

2Pi r

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8
Q

Perimeter of a quadrant

A

1/4 2Pir+2r

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9
Q

Perimeter of a sector

A

2Pir theta/360

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10
Q

L

A
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