Question
A painter charges R20 per square meter. If he paints a rectangular wall that is 6 m long and 3 m high, what is the total cost?
Answers
Answered by
GPT-4o mini
To find the total cost of painting the rectangular wall, we first need to calculate the area of the wall in square meters. The area \( A \) of a rectangle is given by the formula:
\[
A = \text{length} \times \text{height}
\]
In this case, the length of the wall is 6 meters and the height is 3 meters.
Calculating the area:
\[
A = 6 \, \text{m} \times 3 \, \text{m} = 18 \, \text{m}^2
\]
Now, the painter charges R20 per square meter. To find the total cost \( C \), we multiply the area by the cost per square meter:
\[
C = A \times \text{cost per square meter}
\]
\[
C = 18 \, \text{m}^2 \times R20/\text{m}^2 = R360
\]
Thus, the total cost of painting the wall is **R360**.
\[
A = \text{length} \times \text{height}
\]
In this case, the length of the wall is 6 meters and the height is 3 meters.
Calculating the area:
\[
A = 6 \, \text{m} \times 3 \, \text{m} = 18 \, \text{m}^2
\]
Now, the painter charges R20 per square meter. To find the total cost \( C \), we multiply the area by the cost per square meter:
\[
C = A \times \text{cost per square meter}
\]
\[
C = 18 \, \text{m}^2 \times R20/\text{m}^2 = R360
\]
Thus, the total cost of painting the wall is **R360**.