NCERT Book Mensuration MCQ Questions Class 8 Maths Chapter 11

Mensuration MCQ Questions Class 8 Maths Chapter 11

 

Chapter 11

Mensuration

 

Question 1:

 What is the area of parallelogram?

(a) b×h

(b) ab

(c) b²

(d) 1/2 b×h

Ans:

(a) b×h, this is the area of parallelogram.

 

Question 2:

 Find the area of quadrilateral ABCD.

(a) 11

(b) 10

(c) 9

(d) 12

Ans:

d = 4.5cm, h₁ = 1.5 cm 

h₂ = 2.5cm, Area = ½ d (h₁ + h₂) 

= 1/2 × 4.5 × (2.5 + 1.5) cm²

= ½ × 4.5 × 4 cm² = 9 cm² (c)

 

Question 3:

Find the area of rhombus whose diagonals area of lengths 8cm and 6cm.

(a) 20

(b) 24

(c) 22

(d) 21

Ans:

Area of the rhombus = ½ d₁ d₂ 

= 1/2 × 8 × 6cm² = 24 cm² (b)

 

Question 4:

The area of a rhombus 200 cm² and one of the diagonals is 20cm find the other diagonals

(a) 10

(b) 12

(c) 14

(d) 8

Ans:

Area of rhombus = 1/2 d₁ d₂

200 cm² = 1/2 × 20 × d²

200×2/20 = d₂

d₂ = 10 cm (a)

 

Question 5:

In a tower three are 20 cylindrical pillars. The radius of each pillar is 25cm and height is 8cm. Find the total cost of painting the curved surface area of all pillars at the rate of ₹10 per m²?

(a) 2512

(b) 2514

(c) 2500

(d) 2832

Ans:

Radius of cylinder pillar = 25cm = 0.25cm

Curved surface are of a pillar = 2rn

= 2 × 22/7 × 2.05 × 8 = 12.57

Curved surface area of 20 such pillar

cost of painting = 12.57 × 2

= 251.4

=10 × 251.4

= 2514₹ (b)

 

Question 6:

Find the height of a cylinder whose radius 9cm and the total surface area is 564 cm²

(a)

(b)

(c)

(d)

Ans:

Total surface area = 2r (h+r)

= 2 × 22/7 × 9 × (9 + h) 

564 cm² = 396/7 (9 + h)

3948/396 = 9 + h

9.9696 = h 

h = 0.9696 cm

 

Question 7:

Find the side of the cube whose surface area is 2400 cm²?

(a) 20

(b) 22

(c) 24

(d) 28

Ans:

Surface area of the cube is = 2400/6 = a²

a = 20

• In case you have missed:- Previous Chapter MCQ Questions

Question 8:

A closed cylindrical box of radius 14m and height 2m is made from a sheet of metal. How much sheet of metal required?

(a) 198

(b) 178

(c) 156

(d) 176

Ans:

Area of closed cylindrical box 

= 2rh

= 2 × 22/7 × 14m × 2m

= 2 × 22 × 2 × 2

= 176m² (d)

 

Question 9:

Find the volume of cylinder if the area of base is 14m and the height is 9m?

(a) 126

(b) 144

(c) 169

(d) 225

Ans:

Volume of cylinder = Area of base × height

= 14m² × 9m = 126 m³ (a)

 

Question 10:

If the area of base is 225 m³ and the volume of cuboid is 675 m³ then final the height?

(a) 4

(b) 3

(c) 9

(d) 6

Ans:

Volume of cuboid = Base area × Height

675m³ = 225m³ × h

h = 3m (b)

 

Question 11:

A Hall in the form of cuboid measures 40m, 20m, 10m. How many  cuboi dal boxes can be stored in it in the volume of box is 2m³

(a) 6000

(b) 4000

(c) 2000

(d) 1500

Ans:

Volume of Hall = 40×20×10 = 8000m³

Numbers of boxes that can be stored in the hall = Volume of hall/volume of one box

= 8000 m³/2m³ = 4000 (b)

 

Question 12:

Find the surface area of cube if the length of the side is 12cm

(a) 896

(b) 849

(c) 864

(d) 894

Ans:

Surface area of cube = 6l²

= 6×12²

= 6×144

= 864 cm² (c) 864

 

Question 13:

A water tank is in the form of cylinder whose radius 20cm and height/length is 60m. Find the quantity of water can be stored in the tank?

(a) 571.48

(b) 75,428.5

(c) 75,226

(d) 75896

Ans:

Volume of cylinder = r²h

= 22/7 × (20m)² × 60m

= 22×400×60/7 = 75,428.5 m³

 

Question 14:

Find 5m³ = 5000000 cm³ = —– L

(a) 50

(b) 500

(c) 5000

(d) 50000

Ans

5m³ = 5000000 cm³ = 5000L (c)

 

Question 15:

Find the surface area of cuboid from the given option?

(a) 6l²

(b) 2r (r + h)

(c) l³

(d) 2 (lb + bh + h)

Ans:

(d) 2 (lb + bh + hl)/It is the formula of surface area of cuboid.

• In case you have missed:- Next Chapter MCQ Questions

Here is your solution of Mensuration MCQ Questions Class 8 Maths Chapter 11

Dear Student, I appreciate your efforts and hard work that you all had put in. Thank you for being concerned with us and I wish you for your continued success.