unit 39 - arcs and sectors Flashcards by zara hamilton | Brainscape

Q

area of sector =

A

angle/360 x pi x r^2

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Q

length of arc =

A

angle/360 x pi x diameter

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Q

finding angles of a sector

A

length of arc = x/360 * pi * length of 2 sides

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Q

how to find area of a segment

A

work out whole SECTOR
take away unnecessary triangle section
area of segment = sector - triangle

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Q

area of triangle with height =

A

1/2 * base * height

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Q

area of triangle without height =

A

1/2 * a * b * sin(x)

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