Final answer:
To find the total number of bricks needed for the whole patio, we need to calculate the area of the patio and then multiply it by the number of bricks per square metre.
Step-by-step explanation:
To find the area of the patio, we need to multiply the length and the width of the patio. The length is given as 5.25 metres and the width is given as 3 metres. So, the area of the patio can be calculated as:
Area = Length x Width
Area = 5.25 m x 3 m
Area = 15.75 square meters
Now, we know that Nick needs 81 bricks per square metre. So, to find the total number of bricks needed, we can multiply the area of the patio by the number of bricks per square metre:
Total Bricks Needed = Area x Number of Bricks per square metre
Total Bricks Needed = 15.75 square meters x 81 bricks per square metre
Total Bricks Needed = 1273.75 bricks
Therefore, Nick needs approximately 1274 bricks for the whole patio.