1. x x tanx=1 Tanx=3/5.19 Sinx=5/13 x=450 sinx=0.5 x cosx=12/13 x=22.62o
4.24 3 3
5.19 3
Tanx=3/5.19
Sinx=5/13
x=450
sinx=0.5 x 13 5
cosx=12/13
x=22.62o 12
Sinx=3/5
sinx=12.69/15
tanx=5/12 x x
cosx=8/15 15 5
12.69 3
cosx=4/5 8 4

2. 250cm
1000 m
1 km
90 cm
128 cm
0.9 cm
1 m
0.65 km
128 mm
650mm
40 m
2.5 cm
0.9 m
4000 cm
2.5 m
9 mm
12.8 cm
25 mm
1000mm
0.5 km
500 m
650 m
1.28 m
0.65 m

3. 250kg
1000 g
1 kg
900 g
128 g
0.9 t
1 t
0.65 kg
12800 kg
65g
4 kg
0.25 kg
0.9 kg
4000 g
0.25 t
900 kg
12.8 t
250 g
1000kg
0.5 kg
500 g
650 g
0.128 kg
0.065 kg

4. 0.5 minute
½ an hour
30 minutes
30 seconds
1 day
1 year
¼ of an hour
24 hours
52 weeks
15 minutes
3 hours
¾ of an hour
180 minutes
45 minutes
days
1 minute
1 week
60 seconds
168 hours
1 year
1 hour
8 minutes
480 seconds
3600 seconds

5. 400
500
0.7
0.8
0.01
0.02 25 31 36 10 20
100 3 4 1 2 5
1.1
0.2
0.3
3.1
7.5
0.28
420
1.08
1.6 30 11
0.016 35
0.74

6. Perimeter of rectangle
Area of rectangle
A = lw
P= 2l + 2w
C = 2pr
A = pr2
Area of triangle
Circumference of circle
Area of circle
A = ½ bh
Area of trapezium
V = lwh
A =½ (a+b)h
Volume of a cuboid
Surface area of a cuboid
Volume of prism
Area of parallelogram
V= 2(lw +hw +lh)
A = bh
V = cross-sectional area x length
Volume of cylinder
V = pr2h/3
Volume of cone
V = pr2h

7. Curved surface area = 131.95 cm2 Surface area=84 cm2
Diameter = 10 cm
Perimeter =40 cm
Circular area =56.55 cm2
Volume=31.75 cm3
Perimeter = 40 cm
Perimeter = cm
Perimeter = 26 cm
2cm
Curved surface area = cm2
3cm
Surface area=84 cm2
5cm
Area = 84 cm2
7cm
10cm
Birds eye view
2.65cm
8cm
2cm
6cm
10cm
Surface area =94 cm2
Perimeter = cm
Volume = 45 cm3
Net of a box with no lid
Length of all edges=44 cm
Volume= cm3
6cm
Area = 72 cm2
5cm
3cm
Length of all edges =33cm
4cm
8.54cm
4cm
8cm
Volume =60 cm3
3cm
5cm
3cm
Surface area =48 cm2
12cm
6cm

8. 8x – 3x
x + x + x 3x
2x + 3x
X x X 5x
X x X3 5x X2 X4
3(x + 1)
5x + 2y – 3x - y
3x + 3
2x + y
x/4
x + x3
3x – 4(x – 2)
¼ x
x + x3
8 - x
x x -2
(3x)2
4x+3
9x2

9. 2 – 3x= 0
x – 2 = 10
x = 12
x = 2/3
2x + 1 = 5
3x + 7 = 28
x + 9 = 5
x=2
x = 7
x = -4
9x – 5 = 85
x/3 = 1.5
x = 10
x = 4.5
x/5 + 2 = 4
5x + 8 = 18
4x = -16
x = 10
x = 2
x =-4
x = 7
x2 = 9
x = 3 or -3
6x + 4 = 46

10. y=115 w =60 x=90 x=75 z = 75 x = 120 w =72 y=105 y=90 w=65 z = 30025 y
x=90
x=75
z = 75
x = 120
w =72
y=105
y=90
w=65
z = 300 x y
y = 288
y = 75 y x z w x z z 15
y = 60 w y 60
y = 50
w and y = 25
y = 105
x = 15
w = 60
x and z = 108
x = 50 y 20
130 z
x =40 y x 40 z x 75 y
z= 75 w x
z = 90
110

11. Perimeter of rectangle
Area of rectangle
A = lw
P= 2l + 2w
C = 2pr
A = pr2
Area of triangle
Circumference of circle
Area of circle
A = ½ bh
Area of trapezium
V = lwh
A =½ (a+b)h
Volume of a cuboid
Surface area of a cuboid
Volume of prism
Area of parallelogram
V= 2(lw +hw +lh)
A = bh
V = cross-sectional area x length
Volume of cylinder
V = pr2h/3
Volume of cone
V = pr2h