Measurement formulas Year 9 Term 4

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10 Terms

1
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Circumfrence of a circle

C = 2 x pi x r

2
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Area of a circle

A = pi x r²

3
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Area of a sector

A = x/360 x pi x r²

4
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Arc length

l = x/360 × 2pi x r

5
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Area of a parallelogram

A = bh

6
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Area of a triangle

A = 1/2bh

7
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Surface area of a cylinder

SA = 2pi x r² + 2pi x rh

8
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Area of a trapesium

A = 1/2(a+b)h

9
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Volume of a prism

V = Ah

10
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Volume of a cylinder

V = pi x r²h