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Rae and Reena have arranged the bricks horizontally one above the other. If the length, width and height of each brick are 6 inches, 3 inches, and 3 inches, respectively then how many rows of the bricks will be required to create a 3.5 meter wall?
- a)46
- b)58
- c)42
- d)64
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Rae and Reena have arranged the bricks horizontally one above the othe...
To find out how many rows of bricks are required to create a 3.5 meter wall, we need to convert the height of the wall from meters to inches.
1 meter = 39.37 inches
So, 3.5 meters = 3.5 * 39.37 = 137.795 inches
Next, we need to calculate how many bricks can fit in one row.
The length of each brick is 6 inches. To calculate how many bricks can fit in one row, we divide the length of the wall by the length of each brick.
137.795 inches / 6 inches = 22.9658
Since we cannot have a fraction of a brick, we round up to the nearest whole number.
So, we can fit 23 bricks in one row.
Now, we need to calculate how many rows of bricks are required to create the wall.
The height of each brick is 3 inches. To calculate how many rows are required, we divide the height of the wall by the height of each brick.
137.795 inches / 3 inches = 45.9317
Again, we round up to the nearest whole number.
So, we need 46 rows of bricks to create the wall.
Therefore, the correct answer is option A) 46.
1 meter = 39.37 inches
So, 3.5 meters = 3.5 * 39.37 = 137.795 inches
Next, we need to calculate how many bricks can fit in one row.
The length of each brick is 6 inches. To calculate how many bricks can fit in one row, we divide the length of the wall by the length of each brick.
137.795 inches / 6 inches = 22.9658
Since we cannot have a fraction of a brick, we round up to the nearest whole number.
So, we can fit 23 bricks in one row.
Now, we need to calculate how many rows of bricks are required to create the wall.
The height of each brick is 3 inches. To calculate how many rows are required, we divide the height of the wall by the height of each brick.
137.795 inches / 3 inches = 45.9317
Again, we round up to the nearest whole number.
So, we need 46 rows of bricks to create the wall.
Therefore, the correct answer is option A) 46.
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Community Answer
Rae and Reena have arranged the bricks horizontally one above the othe...
Given:
Lenght of a brick = 6 inches
Width of a brick = 3 inches
Height of a brick = 3 inches
Height of the wall = 3.5 meters
Calculation:
Height of a brick = 3 inches
We know, 1 meter = 39.3701 inches ≈ 39.4 inches
Height of the wall = 3.5 meters = 3.5 × 39.4 = 137.9 inches
Total rows of bricks required to create the wall = 137.9/3 = 45.97 ≈ 46
∴ A total of 46 rows of bricks will be required to create a 3.5-meter wall.
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