Page 217 - ICSE Math 4

Exercise 9.3 5. (a) (b)
1. (a) AB, EF; CD, GH; AD, BC; EH, FG; AE, DH; BF, CG
(b) AB, CD; AB, EF; EF, CD (c) AB, CD; AD; BC
(c) (d)
2. (a) (iii) (b) (i) (c) (ii) (d) (i) (e) (ii)
Exercise 9 .4
1. Students to do on their own.
Review Exercise
2. (a) Sphere (b) Cone (c) Cuboid
1. (a) point (b) line segment (c) star ng
(d) Cube (e) Cylinder
(d) extended (e) star ng; ending
3. (a) Solids (b) 3; 3 (c) edge
(f) horizontal, ver cal, slan ng, curved
(d) 1; edge or vertex (e) fl at; curved (f) face
2. (a) False (b) True (c) False (d) True (e) False
Exercise 9.5 3. Students to do on their own.
1. Students to do on their own. 4. Cuboid 5. 14 cm 6. (a) 10 cm (b) 16 cm
2. (a) P (b) AP and BP (c) AB 7.
3. (a) 24 cm (b) 16 cm (c) 20 cm
4. (a) 9 cm (b) 7 cm (c) 2 cm Front Side Top
Exercise 9.6 8. (a) (b) (c)
1. (a) (i) Front (ii) Side (iii) Top
(b) (i) Side (ii) Top (iii) Front
(c) (i) Front (ii) Top (iii) Side
Progress Worksheet
2. (a) (iv) (b) (i) (c) (iii) (d) (ii)
1. (a) plane (b) curved (c) ray
Exercise 9.7 (d) intersec ng (e) parallel lines (f) diameter
(g) circumference
1. (a) (b)
2. (a) (iii) (b) (iv) (c) (ii) (d) (v) (e) (i)
3. (a) Cylinder (b) Cone (c) Triangular prism
4. Students to do on their own.
5. Students to do on their own.
(c)
Chapter 10: Perimeter and Area
Exercise 10.1
1. (a) 14 cm (b) 15 cm (c) 14 cm (d) 14 cm
2. Students to do on their own.
2. Students to do on their own. 3. 14 cm 4. (a) 96 cm (b) 680 m
3. (a) (ii) (b) (i) (c) (ii)
Exercise 10.2
Exercise 9.8 1. (a) 14 cm 2 (b) 21 cm (c) 24 cm 2
2
1 2 1 2
2
1. (a) (b) (c) (d) 2. (a) 39 cm (b) 36 cm (c) 46 cm
2
2
(Answers may vary)
Review Exercise
1. (a) 20 cm (b) 18 cm (c) 18 cm (d) 12 cm
2. (a) (b) (c) (d) 2. (a) 6 cm 2 (b) 3 cm 2 (c) 5 cm 2 (d) 5 cm 2
(Answers may vary)
1
3. 13 square units; 11 square units; 7 square units;
1 2
31 square units
3. (a) (b) 2
Values and Life Skills
60 cm

Progress Worksheet
(c) (d)
1. (a) Perimeter (b) square units (c) 12 cm
2. (a) Perimeter = 12 cm; Area = 7 cm 2
(b) Perimeter = 18 cm; Area = 8 cm 2
4. (a) and (d) (c) Perimeter = 16 cm; Area = 15 cm 2

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