Easter exam

Question 1

How do you calculate density?

Answer 1

mass / volume

Question 2

How do you calculate pressure?

Answer 2

Force/ area (FAP)

Question 3

What is density measured in?

Answer 3

g/cm cubed

Question 4

What is pressure measured in?

Answer 4

n/cm squared

Question 5

How many answers do linear equations have?

Answer 5

One

Question 6

What are the 2 steps for solving quadratic equations?

Answer 6

1) Make the equation equal to 0 2) Factorise and solve

Question 7

How do you calculate the gradient?

Answer 7

Change in y / change in x

Question 8

What is the gradient of a perpendicular line?

Answer 8

The negative reciprocal

Question 9

How do you find the area of a parallelogram?

Answer 9

base x perpendicular height

Question 10

How do you find the area of a trapezium?

Answer 10

Half the sum of the parallel sides times the distance between them

Question 11

How do you find the area of a kite?

Answer 11

width x height / 2

Question 12

How do you calculate the area of a sector?

Answer 12

theta / 360 x pi r squared

Question 13

How do you calculate the length of an arc?

Answer 13

theta / 360 x 2 pi r

Question 14

How do you find the volume of a prism?

Answer 14

area of a cross section x length

Question 15

What are mutually exclusive outcomes?

Answer 15

Cannot happen at the same time

Question 16

P(A) + P(Not A) =

Answer 16

1

Question 17

How do you find P(Not A)

Answer 17

1 - P(A)

Question 18

How do you find P(A or B)

Answer 18

P(A) + P(B)

Question 19

1 litre = …….cm cubed

Answer 19

1 litre = 1000 cm cubed

Question 20

1 metre squared = …….cm squared

Answer 20

1 metre squared = 10,000cm squared

Question 21

1 metre cubed = …….cm cubed

Answer 21

1 metre cubed = 1,000,000 cm cubed

Question 22

A^-2

Answer 22

1/a²

Question 23

a^-1

Answer 23

1/a

Question 24

(a/b) ^-n

Answer 24

(b/a)ⁿ = bⁿ/aⁿ

Question 25

x^1/a

Answer 25

^{a square root of x}

Question 26

(4 x 10⁵) x (2 x 10⁸)

Answer 26

= 4 x 2 x 10⁵ x 10⁸ = 8 x 10¹³

Question 27

(4 x 10^-4)³

Answer 27

4³ x (10^-4)³ = 64 x 10^-12 = 6.4 x 10^-11

Question 28

(2 x 10⁵) + (9.2 x 10⁴)

Answer 28

= 20 x 10⁴ + 9.2 x 10⁴ = 29.2 x 10⁴ = 2.92 x 10⁵

Question 29

Answer 29

Angle at the centre is twice the angle at the circumference

Question 30

Answer 30

Angle on the same arc are equal

Question 31

Answer 31

The angle in an semi circle is 90°

Question 32

Answer 32

The perpendicular bisector of a chord goes through the centre of a circle

Question 33

Answer 33

The angle between a tangent and a chord is equal to the angle un the alternate segment

Question 34

Answer 34

Opposite angles in a cyclic quadrilateral add up to 180°

Question 35

Answer 35

Question 37

What is A n B

Answer 37

A intersection B, where you get hashing

Question 38

A u B

Answer 38

A or B

Question 39

What is A’

Answer 39

Not A

Question 40

Area of parallelogram

Answer 40

Base x perpendicular height

Question 41

Area of trapezium

Answer 41

Half the sum of the parallel sides times the distance between them

Question 42

Area of kite

Answer 42

Width x height /2

Question 43

Area of sector

Answer 43

Theta / 360 x pi x r squared

Question 44

Length of an arc

Answer 44

Thea / 360 x 2 x pi x r

Question 45

Volume of prism

Answer 45

Area of cross section x length

Question 46

Surface area of cylinder

Answer 46

2 x pi x r squared + 2 x pi x r x l

Question 47

Surface area of sphere

Answer 47

4 x pi x r squared

Question 48

Volume of pyramid

Answer 48

1/3 x base área x height

Question 49

Volume of cone

Question 50

Volume of sphere

Answer 50

4/3 x pi x r³

Question 51

Curved surface area of cone

Answer 51

Pi x r x l, to find l = h² + r²