formulas need to know Flashcards

(19 cards)

1
Q

rectangle?

A

rectangle = length X width

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2
Q

parallelogram?

A

parallelogram = base X height

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3
Q

triangle?

A

triangle = 1/2 base X height

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4
Q

trapezium?

A

trapezium = 1/2(a+b)height

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5
Q

cuboid?

A

cuboid = length X width X height

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6
Q

prism?

A

prism = area of cross section X length

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7
Q

cylinder?

A

πr(squared)height

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8
Q

pyramid?

A

pyramid = 1/3 X area of base X height

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9
Q

circumference?

A

circumference = π X diameter, c = πd

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10
Q

area of a circle?

A

π X radius squared, A = πr(squared)

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11
Q

speed?

A

speed = distance / time

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12
Q

density?

A

desity = mass / volume

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13
Q

Pressure?

A

pressure = force / area

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14
Q

Pythagoras thereom?

A

pythagorous thearom = for a right angled triangle, a(squared) +b(squared) = c(suqared)

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15
Q

Trigonometric rations

A

sin X = opp/hyp, cos X = adj/hyp, tan X = opp/adj

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16
Q

sine rule?

A

sine rule = a/sin A = b/sin B = c/sin C

17
Q

cosine rule?

A

a(squared) = b(squared) + c(squared) - 2bc cos A

18
Q

area of triangle?

A

area of a triangle = 1/2ab sin C

19
Q

quadratic equation?

A

ax(squared) +bx+c = 0