Cambridge International Mathematics

692 ANSWERS

8 ¼ 1 : 24 m 9aV=

³ μ

360

́

£¼r^2 h

bA=

³μ

360

́

£ 2 ¼r(r+h)+2hr

REVIEW SET 11B

1a 0 : 35 g b 0 : 25 t c 16 800g

d 0 : 15 litres e 26 000cl f 800 ml

2aA=16x^2 b A=6¼x^2 c A=7x^2

3a 3 : 99 cm b 3 m 4220 ml

5a¼ 339 : 29 cm^3 b 1272 : 35 cm^3 c ¼14 137: 17 cm^3

6 ¼ 33 : 5 kg 7 ¼ 170 litres 8 ¼ 872 cm^3

9a 4 m b 768 m^3 c ¼ 527 m^2

EXERCISE 12A

1 J(4,3),K(¡ 2 ,¡3),L(¡ 4 ,2),M(3,¡1),N(0,3)

2

3a 1 st b 4 th c 3 rd d 2 nd

eNone, it is on the negativex-axis.

f None, it is on the negativey-axis. g 3 rd h 4 th

4a b

cd

ef

gh

5a

i yes ii E

biyes

ii D

EXERCISE 12B.1

1a 2 units b

p

37 units c

p

13 units d 3 units

e 2

p

2 units f

p

29 units g 5 units h 7 units

i 5

p

2 units

2a 1 : 41 units b 5 : 39 units c 6 : 71 units

d 5 : 10 units e 6 : 40 units f 6 : 32 units

g 7 : 07 units h 4 : 12 units i 2 : 24 units

EXERCISE 12B.2

1a 2

p

2 units b 7 units c 2

p

5 units d 6 units

e 7 units f

p

5 units g

p

10 units h 3

p

5 units

2aisosceles (AB=AC) b scalene

c isosceles (AB=BC) d isosceles (BC=AC)

e equilateral f isosceles (AC=BC)

3aAbBC bAbBC c BbAC d BbAC

4aa=2 b a=3or¡ 5 c a=§ 2 d a=¡ 1

EXERCISE 12C

1a(¡ 112 , 312 ) b(¡ 1 ,¡2) c (1, 112 ) d(2,1)

e (1,¡ 112 ) f(¡ 4 , 112 ) g(¡ 412 ,^12 ) h(¡ 112 ,^12 )

2a(5,3) b(1,¡1) c (1^12 ,3) d(0,4)

e (2,¡ 112 ) f(1,1) g(1, 212 ) h(2,¡ 312 )

3aB(0,¡6) bB(5,¡2) c B(0,6) dB(0,7)

e B(¡ 7 ,3) fB(¡ 3 ,0)

4aP(¡ 9 ,10) b P(6,3) 5 C(1,¡3) 6 P(7,¡3)

7 S(¡ 2 ,0) 8

p

89

2 units^9 a=2

1

3 , b=5

1

2

EXERCISE 12D.1

1a^13 b 0 c ¡ 3 d^23 e¡^34 f undefined

g¡ 4 h¡^25

2a b c

de f

3a^15 b^14 c 4 d 0 e undefined f^27 g¡^27

h 1

45

y

x

S

P

W

Q

R U

V

T

-2 2

-2

2

O

y

x

x¡=¡-2

O

y

x

y¡=¡-3

O

y

x

x¡=¡0

O

y

x

y¡=¡0

O

y

x

O

y

O x

y

O x

y

O x

y

x

-1^12345

-2

-3

-4

O

y

-2 x

-2

-4

2

2

O

y

x

(1, 2)

m¡¡3=

m¡¡=2 m¡¡=1

m¡=Qw_

m¡=Er_

O

y

x

(,)-2 -1

m=0

m=-\Qw_

m=-1

m¡-3=

O

IB MYP_3 ANS

cyan magenta yellow black

(^05255075950525507595)
100 100
(^05255075950525507595)
100 100
Y:\HAESE\IGCSE01\IG01_an\692IB_IGC1_an.CDR Tuesday, 18 November 2008 3:22:46 PM PETER