Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 2

MEDIUM

9th CBSE

IMPORTANT

Earn 100

Three cubes of metal whose edges are in the ratio $3 : 4 : 5$ are melted down into a single cube whose diagonal is $12 \sqrt{3} cm$ . Find the edges of three cubes.

Important Questions on Surface Area and Volume of a Cuboid and Cube

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 3

If the perimeter of each face of a cube is

\Rightarrow x = \frac{12}{6}

its lateral surface area

=

_____

\Rightarrow x = 2 .

. Note that four faces which meet the base of a cube are called its lateral faces.

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 4

The edge of a cube whose surface area is $432 m^{2}$ is $k \sqrt{2} m$ . Find the value of k.

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 5

A cuboid has total surface area of

372 {cm}^{2}

and its lateral surface area is

180 {cm}^{2}

, the area of its base

=

_____

{cm}^{2}

.

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 6

Three cubes of each side

4 cm

are joined end to end. If the surface area of the resulting cuboid is

k {cm}^{2}

, find

k

.

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 7

The surface area of a cuboid is

1300 {cm}^{2} .

If its breadth is

10 cm

, height is

20 cm

and length is

k cm

, find

k

.

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 1

The length of the longest rod that can be fitted in a cubical vessel of edge

10 cm

long, is

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 2

Three equal cubes are placed adjacently in a row. The ratio of the total surface area of the resulting cuboid to that of the sum of the surface areas of three cubes, is

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 3

If the length of a diagonal of a cube is

8 \sqrt{3} cm,

then its surface area is