GCSE Maths: Equations for Arcs & Sectors

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area of circle

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A = πr²

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circumference of circle

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C = 2πr

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13 Terms

1
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area of circle

A = πr²

2
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circumference of circle

C = 2πr

3
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volume of cone

V = (1/3)πr²h

4
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volume of sphere

V = (4/3)πr³

5
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volume of pyramid

V = (1/3) * base area * height

6
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volume of frustrum.

V = vol. of bigger cone - vol. of smaller cone

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curved surface of cone

A = πrl (l is the slant height of cone)

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total surface area of cone

A = πrl + πr²

9
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surface area of sphere

A = 4πr²

10
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arc length

L = θ/360 * πd

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area of sector

A = θ/360 * πr²

12
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area of ABC triangle

A = (1/2)abSinC

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area of segment

area of sector - triangle