# CBSE Class 9 Maths Surface Areas and Volumes MCQs Set B

## Surface Areas and Volumes Class 9 MCQ

Class 9 Mathematics students should refer to the following multiple-choice questions with answers for Surface Areas and Volumes in standard 9. These MCQ questions with answers for Grade 9 Mathematics will come in exams and help you to score good marks

### Class 9 Surface Areas and Volumes MCQ Questions with Answers

1. The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. The area of the playground in m2 is:

(a) 1584 (b) 1284 (c) 1384 (d) 1184

2. A cylindrical pillar is 50 cm in diameter and 3.5 m in height. The cost of painting its curved surface at the rate of Rs. 12.50 per m2 is:

(a) Rs. 68.75 (b) Rs. 58.75 (c) Rs. 48.75 (d) Rs. 38.75

3. The inner diameter of circular well is 3.5m. It is 10m deep. Its inner curved surface area in m2 is:

(a) 120 (b) 110 (c) 130 (d) 140

4. In a hot water heating system there is a cylindrical pipe of length 28 m and diameter 5 cm. The total radiating surface area in the system in m2 is:

(a) 6.6 (b) 5.5 (c) 4.4 (d) 3.4

5. The curved surface area of a right circular cone of slant height 10 cm and base radius 7 cm is

(a) 120 cm2 (b) 220 cm2 (c) 240 cm2 (d) 140 cm2

6. The height of a cone is 16 cm and base radius is 12 cm. Its slant height is

(a) 10 cm (b) 15 cm (c) 20 cm (d) 8 cm

7. The curved surface area of a right circular cone of height 16 cm and base radius 12 cm is

(a) 753.6 cm2 (b) 1205.76 cm2 (c) 863.8 cm2 (d) 907.6 cm2

8. The curved surface area of a right circular cone of slant height 10 cm and base radius 10.5 cm is

(a) 185 cm2 (b) 160 cm2 (c) 165 cm2 (d) 195 cm2

9. The slant height of a cone is 26 cm and base diameter is 20 cm. Its height is

(a) 24 cm (b) 25 cm (c) 23 cm (d) 35 cm

10. The curved surface area of a cone is 308 cm2 and its slant height is 14 cm. The radius of its baseis

(a) 8 cm (b) 7 cm (c) 9 cm (d) 12 cm

11. A conical tent is 10 m high and the radius of its base is 24 m. The slant height of tent is

(a) 26 m (b) 28 m (c) 25 m (d) 27 m

12. The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. The cost of white washing its curved surface at the rate of Rs. 210 per 100 m2 is

(a) Rs. 1233 (b) Rs. 1155 (c) Rs. 1388 (d) Rs. 1432

## More Questions..................

#### Question: Vertical and horizontal cross-sections of a right circular cylinder are always respectively

• a) rectangle, circle
• b) rectangle, ellipse
• c) square, circle
• d) rectangle, square

• a) 3
• b) 2
• c) 4
• d) 5

• a) 8 cm
• b) 6 cm
• c) 4 cm
• d) 9 cm

• a) 1 : 2
• b) 1 : 4
• c) 1 : 1
• d) 1 : 3

• a) 96 m
• b) 104 m
• c) 208 m
• d) 406 m

#### Question: A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The difference between surface areas of two solids is

• a) 286 cm2
• b) 280 cm2
• c) 284 cm2
• d) None of these

• a) 6 cm
• b) 9 cm
• c) 12 cm
• d) 10 cm

#### Question: If length, breadth and height of rectangular parallelopiped are in ratio 6 : 5 : 4 and total surface area\ is 33,300 m2, then length breadth and height of parallelopiped are in (m)

• a) 90, 75, 60
• b) 90, 75 , 70
• c) 85, 75, 60
• d) 80, 70, 60

• a) 14 cm
• b) 4 cm
• c) 6 cm
• d) 8 cm

#### Question: A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and the thickness of wood is 2.5 cm. The volume of the wood, is

• a) 82,125 cu cm
• b) 85,000 cu cm
• c) 80,000 cu cm
• d) 84,000 cu cm

• a) 120
• b) 96
• c) 108
• d) 100

• a) 1 : 9
• b) 1 : 3
• c) 1 : 6
• d) 1 : 18

• a) 24
• b) 60
• c) 48
• d) 324

#### Question: A rectangle field has its length and breadth in the ratio 5 : 3. Its area is 3.75 hectares. The cost of fencing it at Rs. 5 per meter is

• a) Rs. 4000
• b) Rs. 500
• c) Rs. 1000
• d) None of these

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