Fromulae

Question 1

Area of a Trapezium

Answer 1

0.5 x (a+b) x h

Question 2

Volume of a sphere

Answer 2

4/3 x pi x r3

Question 3

Surface area of a sphere

Answer 3

4 x pi x r2

Question 4

Volume of a cone

Answer 4

1/3 x pi x r2 x h

Question 5

Area of a triangle

Answer 5

1/2 x a x b x sinC

Question 6

Volume of a cylinder

Answer 6

Pi x r2 x h

Question 7

Volume of a pyramid

Answer 7

1/3 x base area x height

Question 8

Interior angle of an n-gon

Answer 8

(n-2) x 180 / n

Question 9

Area of sector

Answer 9

Angle / 360 x r2 x pi

Question 10

Arc length

Answer 10

Angle / 360 x 2 x r x pi

Add 2 radii for perimeter

Question 11

Area of a circle

Answer 11

pi x r2

Question 12

Quadratic formula

Answer 12

-b +- (square root of: bsqaured - 4ac) / 2a

Question 13

What is 5 miles roughly equal to?

Answer 13

8 kilometres

Question 14

What is 1 gallon roughly equal to?

Answer 14

4.5 litres

Question 15

What is 2.2 pounds roughly equal to?

Answer 15

1 kilogram

Question 16

What is 1 inch roughly equal to?

Answer 16

2.5 centimetres

Question 17

What is circle theorem 1?

Answer 17

Angle at the centre is double the angle at the circumference

Question 18

What is circle theorem 2?

Answer 18

Angles in the same segment are equal

Question 19

What is alternate segment theorem?

Answer 19

There are two equal pairs of angles. One made at the tangent line is equal to the angle in the triangle in the opposite side

Question 20

What is circle theorem in cyclic quadrilaterals?

Answer 20

Opposite angles in a cyclic quadrilaterals adds up to 180

Question 21

What is a tangent theorem?

Answer 21

• The angle between a tangent to a circle and the radius to that point is 90 degrees
• Tangent at any point on a circule is perpendicular to the radius at that point

Question 22

How do you work out frequency density? What goes on what axis?

Answer 22

Frequency / class width 
X axis: class width measurement 
Y axis: frequency density

Question 23

What is 1 litre equal to in cm cubed?

Answer 23

1000 cm cubed

Question 24

What is 1000L equal to in m cubed?

Answer 24

1m cubed

Question 25

What is the two line circle theorem?

Answer 25

Tangents from an external point are equal in length

Question 26

What do chords and circles do?

Answer 26

The perpendicular from the centre of a chord bisects the chord

Question 27

What is the semi circle circle theorem?

Answer 27

Angle sub tended at the circumference by a semi circle is 90 degrees

Question 28

What is the question of a circle?

Answer 28

X square plus y squared = r squared

Question 29

What is the equation of a circle not centred at the origin?

Answer 29

(X-a) squared + (y-b) squared = r2 (a,b being the centre)

Question 30

What is sin30?

Answer 30

0.5

Question 31

What is sin60?

Answer 31

Route 3 over two

Question 32

What is sin45?

Answer 32

1 over route 2

Question 33

What is sin0?

Answer 33

0

Question 34

What is sin90?

Answer 34

1

Question 35

What is sin180?

Answer 35

0

Question 36

What is cos30?

Answer 36

Route 3 over 2

Question 37

What is cos60?

Answer 37

0.5

Question 38

What is cos45?

Answer 38

1 over route 2

Question 39

What is cos0?

Answer 39

1

Question 40

What is cos90?

Answer 40

0

Question 41

What is cos180?

Answer 41

-1

Question 42

What is tan30?

Answer 42

1 over route 3

Question 43

What is tan60?

Answer 43

Route 3

Question 44

What is tan45?

Answer 44

1

Question 45

What is tan0?

Answer 45

0

Question 46

What is tan90?

Answer 46

Undefined

Question 47

What is tan180?

Answer 47

0

Question 48

What is the cosine rule?

Answer 48

• a squared = b squared + c squared - 2bcCosA

- CosA = b squared + c squared - a squared / 2bc

Question 49

What is the sine rule?

Answer 49

aSinB = bSinA

Question 50

Which triangles are congruent?

Answer 50

ASA, SAS, SSS, RHS

Question 51

Which triangles are not congruent?

Answer 51

AAA, SSA

Question 52

Surface area of a cylinder

Answer 52

2 x pi x r x h