RS Aggarwal Class 6 Solutions Three Dimensional Shapes

Exercise 19

Mark against the correct answer in each of Question 1 to Question 6.

Question 1:

A cuboid has

(a) length only

(b) length and breadth only

(c) length, breadth and height

(d) thickness only

Solution:

(c) length, breadth and height

A cuboid is a 3-dimensional figure.

Question 2:

A dice is an example of a

(a) cuboid

(b) cube

(c) cone

(d) cylinder

Solution:

(b) cube

Question 3:

A gas pipe is an example of a

(a) cuboid

(b) cube

(c) cone

(d) cylinder

Solution:

(d) cylinder

Question 4:

A football is an example of a

(a) cylinder

(b) cone

(c) sphere

(d) none of these

Solution:

(c) sphere

Question 5:

A brick is an example of a

(a) cube

(b) cuboid

(c) prism

(d) cylinder

Solution:

(b) cuboid

Question 6:

An ice-cream cone is an example of a

(a) cuboid

(b) cube

(c) pyramid

(d) none of these

Solution:

(d) None of these

It’s a cone.

Question 7:

Fill in the blanks:

(i) An object that occupies space is called a ________.

(ii) A cuboid has ______ faces, ______ edges and ________ vertices.

(iii) The ______ faces of a cuboid are identical.

(iv) A ________ has no vertex and no edge.

(v) All the face of a ________ are identical.

(vi) A square pyramid has ________ lateral triangular faces and _______ edges.

(vii) A triangular pyramid has _________ triangular lateral faces and ________ edges.

(viii) A triangular prism has ________ vertices, ________ rectangular lateral faces, __________ triangular bases and ________ edges.

Solution:

(i) An object that occupies space is called a solid.

(ii) A cuboid has 6 rectangular faces, 12 edges and 8 vertices.

(iii) The opposite faces of a cuboid are identical.

(iv) A sphere has no vertex and no edge.

(v) All the face of a cube are identical.

(vi) A square pyramid has 4 lateral triangular faces and 8 edges.

(vii) A triangular pyramid has 3 triangular lateral faces and 6 edges.

(viii) A triangular prism has 6 vertices, 3 rectangular lateral faces, 2 triangular bases and 9 edges.

Question 8:

Give examples of four objects which are in the shape of:

(a) a cone

(b) a cuboid

(c) a cylinder

Solution:

(a) An ice cream cone, a conical tent, a clown’s cap and a conical vessel are in the shape of a cone.

(b) A wooden box, a match box, a brick and an almirah are in the shape of a cuboid.

(c) A measuring jar, a gas cylinder, a test tube and a circular pillar are in the shape of a cylinder.


Practise This Question

The process of composting in which red worms are used for composting is __.