Page 174 - Maths Skill - 3

172 Maths

Let’s Build a Cuboid!
Now, let’s make a cuboid. Follow these steps:

1. Cut 6 rectangles. Opposite rectangles should be the same size.

2. Glue the edges of the rectangles together to form a box.
3. Check your cuboid. Does it have 6 rectangular faces, 8 corners,

12 edges?
Look at the given model and answer the following questions.

� Write the count of faces from the right view ___________

� Write the count of faces from the left view ___________
� Write the count of faces from the top view ___________

� Write the count of faces from the front view ___________

Skeleton Shapes

Skeleton shapes are made with balls of modelling clay and straws.

The given picture shows below a cube and a cuboid with their skeleton.

Skeleton Cube Skeleton Cuboid

Exercise 13.1

1. Count and write the number of cubes or cuboids used to make the following shapes.

(a) (b) (c)

2. Circle the correct option.
(a) A chalk is an example of cone/cylinder.

(b) A football is an example of a cuboid/sphere.

(c) In a cuboid, every face is a square/rectangle.

(d) A dice is an example of cuboid/cube.
(e) A battery cell is an example of cube/cylinder.