START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 6

MEDIUM

8th CBSE

IMPORTANT

Earn 100

A rectangular sheet of paper, $44 cm$ long and $16 cm$ broad, is rolled along its length to form a cylinder. What is the radius of the cylinder? What is its volume?

Important Questions on Mensuration-II (Solid Figures)

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 7

The thickness of a metal pipe is

1 cm

. Its inner diameter is

14 cm

. What is the volume of metal needed for a pipe of length

1 m

? (Use

π = 3.14

)

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 8

How many cubic metre of soil must be dug out to sink a well which is

21 m

deep and has a diameter of

8 m

? If the soil so dug out is spread over a rectangular plot

24 m \times 11 m

, what is the height of the platform formed?

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 9

A particular brand of milk powder is available in two packs—a tin pack with a square base of each side

6 cm

and height

14 cm

or one with a circular base of radius

3.5 cm

and height

12 cm

. Which tin has a greater capacity and by how much?

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 10

Into a circular drum ot radius

4.9 m

and height

3.6 m

, how many full bags of grain can be emptied if the space required for each given bag is

1.8 m^{3}

? (Take

π = 3.14

)

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 11

The inner diameter of a wooden cylindrical pipe is

24 cm

and its outer diameter is

28 cm

. The length of the pipe is

35 cm

. Find the mass of the pipe, if

1 {cm}^{3}

of wood has mass of

4 g

.

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 12

If the lateral surface of a cylinder of height $5 cm$ is $94.2 {cm}^{2}$ , then find the radius of the base.

EASY

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 12

If the lateral surfaee of a cylinder of height $5 cm$ is $94.2 {cm}^{2}$ , then find the volume of the cylinder(Use $π = 3.14$ )

MEDIUM

8th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 13

The ratio between the curved surface area and the total surface area of a right circular cylinder is

1 : 2

. Find the volume of the cylinder, if its total surface area is

616 {cm}^{2}

.