Question

20 small blocks each of dimensions 3 cm x 3 cm x 3 cm are piled up to form a big block.
What is the volume of the big block?​

Answer 1

volume of big block (V) =20X volume of small block

we get,

V=20*3*3*3

V=540cm³

Answer 2

★ Given:

A small block of dimensions 3 cm x 3 cm x 3 cm.

There are a total no. of 20 blocks to form a big block.

★ To Find:

The volume of the big block.

★ Analysis

First of all, we need to find the volume of one block. When we multiply this to the total no. of blocks, we will get the volume of the big block.

★ Solution:

Length of the small block = 3 cm

Breadth of the small block = 3 cm

Height of the small block = 3 cm

Volume of a cube = a³

= 3³

= 27 cm³

No. of blocks present = 20

Total volume of the block = 20 x 27

= 540 cm³

Hence the volume of the big block is 27 cm³.

Important Volume Formulae:

→ Volume of a cube = a³

→ Volume of a cuboid = lbh

→ Volume of a right circular cylinder = πr²h

→ Volume of a sphere = 4/3 πr³

→ Volume of a cone = 1/3πr²h