Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 9

MEDIUM

8th CBSE

IMPORTANT

Earn 100

A cuboid has a total surface area of $625 m^{2}$ and lateral surface area is $400 m^{2}$ . If the area of its base is $k m^{2}$ , then find the value of $k$ .

50% studentsanswered this correctly

Important Questions on Surface Area and Volume of Solids

EASY

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 10

The bottom of a tin measures

36 cm by 36 cm

. It has a height of

48 cm

. How many litres of water will it hold if the surface of water is at

16 cm

below the top

?

MEDIUM

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 11

If the length of the side of a cube which has a volume equal to one-third of a box which has dimensions as

24 cm \times 18 cm \times 12 cm

is

k cm

, then find the value of

k

.

MEDIUM

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 12

The length, breadth and height of a cuboid are in the ratio

6 : 4 : 7

. If total surface area of the cuboid is given as

1692 {cm}^{2}

. If its volume is

k c m^{3}

then find the value of

k

.

EASY

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 13

A metal cube of

16 cm

edge is melted and formed into four smaller cubes. If the edges of three smaller cubes are

2 cm, 4 cm and 6 cm .

If the side of the fourth smaller cube is

2 \sqrt[3]{k} cm

, then find the value of

k

.

MEDIUM

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 14

The curved surface area and volume of a cylindrical pillar are

528 m^{2}

and

1584 m^{3}

respectively. Find the diameter and height of the pillar.

HARD

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 21 - Surface Area and Volume of Solids>Revision Time>Q 15

A well of

2 m

diameter is dug

7 m

deep. The earth dug out is spread evenly all around it to a width of

5 m

to form an embankment. If the height of the embankment so formed is

k cm

, then find the value of

k

.