Question

A block measure 22 cm by 11 cm by 7 cm. How many of these blocks will be needed to build a wall 5.5 m long , 22cm thick and 3.5m high

Answer 1

[AI-generated answer — Explain Bot]

To calculate the number of blocks needed to build a wall, we need to find the volume of the wall and the volume of each block.

Given:
Dimensions of the block:
Length = 22 cm
Width = 11 cm
Height = 7 cm

Dimensions of the wall:
Length = 5.5 m = 550 cm
Thickness = 22 cm
Height = 3.5 m = 350 cm

Let's calculate the volume of the block:

Volume of the block = Length × Width × Height
= 22 cm × 11 cm × 7 cm
= 1,694 cm³

Next, we calculate the volume of the wall:

Volume of the wall = Length × Thickness × Height
= 550 cm × 22 cm × 350 cm
= 4,235,000 cm³

Now, divide the volume of the wall by the volume of each block to find the number of blocks needed:

Number of blocks = Volume of the wall / Volume of the block
= 4,235,000 cm³ / 1,694 cm³
≈ 2,500 blocks

Therefore, you will need approximately 2,500 blocks to build the wall.