Page 171 - Maths Skill - 6

Answers 169

Integrated Question

(i) Road 1, 2 (ii) yourself (iii) Rood 3 (iv) 12 (v) yourself

Chapter - 7: Perimeter and Area

Boot-up

A. 1. (ii) 2. (i) 3. (iii) 4. (ii) 5. (ii)
B. 1. Perimeter 2. 3 sides 3. (Length + Breadth) 4. Side 5. Breadth
C. 1. False 2. False 3. True 4. False 5. True 6. True

Exercise - 7.1
1. (i) 5 cm (ii) 22 cm (iii) 24 cm (iv) 30 cm 2. (i) 47 cm (ii) 22 cm (iii) 48 cm (iv) 24 m (v) 18 m
3. (i) 30 m (ii) 54 m (iii) 100 m (iv) 140 cm 4. 120 cm 5. 9 m 6. ` 960 7. 10 cm
8. 39 cm 9. 12 cm 10. 19 m

Exercise - 7.2

1. (i) 13 cm 2 (ii) 12 1 cm (iii) 9 cm (iv) 6 cm (v) 10 cm (vi) 10 cm 2. (i) 31.5 cm (ii) 8 cm (iii) 0.5 cm
2
2
2
2
2
2
2
3. (i) 12 cm , 14 cm (ii) 20 cm, 64 cm (iii) 42.5 cm , 27 cm 4. 20 cm , 18 cm 5. 5 cm 6. 60 m
2
2
2
7. 50 m 8. ` 1350 9. ` 21371.20 10. Two times of breadth square or 2 × (breadth) 11. Two times of the previous area
2
2
12. 17.5 cm 13. ` 136675 14. (i) 12.25 cm , 14 cm (ii) 5 cm, 25 cm (iii) 4 cm, 16 cm 15. ` 2343.75
2
2
16. Four times of the previous area 17. 13 cm 18. ` 7422.48 19. 4 cm
Assessment Time
A. 1. (i) 2. (ii) 3. (iii) 4. (iv)
2
B. 1. length × breadth 2. 7200 cm 3. 120 m 4. 3 (breadth) 5. 18 cm
C. 1. True 2. False 3. False 4. True
D. 1. (a) x = 500 (b) ` 24000 (c) 125000 m (d) 1500 m
2. (a) (iv) (b) (iii) (c) (ii) (d) (iii) 3. (a) (i) (b) (ii) (c) (iii) (d) (iii) (e) (i)
E. 1. (d) 2. (a)
F. 1. ` 960 2. 2000 m; 10 rounds 3. Pinky, 80 m 4. 10 m 60 cm; ` 265 5. 6 times
Integrate Questions
1. 44 meters 2. ` 3630000 3. 5 × 3 or 3 × 5
2
HOTS

1. 2,204 m 2 2. (i) not possible (ii) possible 3. 250 envelopes 4. Yes
Assessment - 3

1. (a) 2. (c) 3. (d) 4. (b) 5. (c) 6. 6 cm 7. 4 × side 8. obtuse angle
9. line segment 10. acute 11. True 12. False 13. True 14. True 15. False 16. c 17. d
18. a 19. d 20. a 21. 72 cm 22. ` 260 23. AB, BC, AC 24. 90° 25. 33.75 m 2
26. 14 cm 27. 30 m 28. 16 cm