How many bricks of size 20cm×10cm×5cm are required to Build the wall leaving 10%of the space for the cement work?
About that many
To calculate the number of bricks required, we first need to determine the total wall area after leaving 10% of the space for cement work.
1. Calculate the total wall area:
- Let's assume the dimensions of the wall are L (length), W (width), and H (height).
- The area of one brick is given by the product of its length, width, and height: 20 cm × 10 cm × 5 cm = 1000 cm³.
- To find the area of the wall, we multiply the length, width, and height: L × W × H.
2. Calculate the area remaining after leaving 10% for cement work:
- Subtract 10% of the total wall area from the total wall area: (L × W × H) - 0.1 × (L × W × H) = 0.9 × (L × W × H).
3. Calculate the number of bricks needed:
- Divide the remaining area by the area of one brick: (0.9 × (L × W × H)) / 1000.
Please provide the dimensions (length, width, and height) of the wall so that I can calculate the number of bricks required.
To calculate the number of bricks required, we first need to determine the total volume of the wall.
The volume of one brick can be calculated by multiplying its length, width, and height.
Volume of one brick = 20cm x 10cm x 5cm
Next, we need to determine the volume of the entire wall, including the space for cement work. To do this, we multiply the volume of one brick by the number of bricks needed, and then add 10% of the wall volume.
Let's assume the wall dimensions are not provided, so for simplicity let's assume the dimensions of the wall are:
Height = H cm
Length = L cm
To calculate the total volume of the wall (including 10% for cement work), we use the following formula:
Total wall volume = (Volume of one brick x Number of bricks) + 10% of (Volume of one brick x Number of bricks)
Substituting the values into the formula, we get:
Total wall volume = (20cm x 10cm x 5cm x Number of bricks) + 0.10(20cm x 10cm x 5cm x Number of bricks)
Simplifying the equation, we have:
Total wall volume = 20cm x 10cm x 5cm x Number of bricks + 0.10 x 20cm x 10cm x 5cm x Number of bricks
To determine the number of bricks needed, we need to solve for Number of bricks:
Number of bricks = (Total wall volume) / (20cm x 10cm x 5cm + 0.10 x 20cm x 10cm x 5cm)
Substituting the values, we get:
Number of bricks = (Total wall volume) / (1000cm^3 + 100cm^3)
Finally, we can calculate the number of bricks required once we know the dimensions of the wall (H and L), and we have to ensure all measurements are in the same units (e.g., cm).