Answers to all pages - Hodder Plus Home
Answers to all pages - Hodder Plus Home
Answers to all pages - Hodder Plus Home
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Constructions (page 88)<br />
1 AX = 4·8 cm<br />
2 MZ = 2·9 cm<br />
Model answers<br />
2D shapes (page 90)<br />
1<br />
1 A = ( –<br />
2 × 5 × 4·6) + (0·7 × 6) = 15·7 cm 2<br />
2 C = π × d<br />
40 200<br />
d = ––––––– = 12 796 km<br />
π<br />
r = 6398 km<br />
1 –2<br />
3 (24 × 28) – ( × π × 12 2 ) = 445·8 m 2<br />
4 (39 × 30) – 8( × 16 × 12) = 402 m 2<br />
144<br />
5 × π × 14·5 2 1<br />
–––<br />
– –<br />
360<br />
2 × 14·5 × 14·5 × sin144° = 202·4 m 2<br />
Loci (page 92)<br />
All diagrams are shown full size.<br />
1<br />
1 –2<br />
A<br />
B<br />
Scale 1 cm <strong>to</strong> 10 km<br />
2<br />
A<br />
Fence<br />
C<br />
Hedge<br />
House<br />
B<br />
Fence<br />
D<br />
Scale 1 cm <strong>to</strong> 2 m<br />
22<br />
IGCSE Revision Guide for Mathematics Model <strong>Answers</strong> © 2004, <strong>Hodder</strong> & S<strong>to</strong>ugh<strong>to</strong>n Educational
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