Question

The area of a rectangle is length x breadth. A rectangle wall is 25 metres long and 2 metres high. If painting the wall costs the wall N$ 18.00 per square metre, how much will it take cost to paint both sides of the wall assuming that it cost nothing to paint the top and the sides?

Answer 1

To find the cost of painting both sides of the wall, we first need to calculate the area of one side of the wall. The area of the wall can be calculated using the formula for the area of a rectangle, which is:

\[
\text{Area} = \text{Length} \times \text{Height}
\]

Given:
- Length = 25 metres
- Height = 2 metres

Calculating the area of one side:

\[
\text{Area} = 25 \, \text{m} \times 2 \, \text{m} = 50 \, \text{m}^2
\]

Since we need to paint both sides of the wall, we double this area:

\[
\text{Total area to be painted} = 2 \times 50 \, \text{m}^2 = 100 \, \text{m}^2
\]

Next, we need to calculate the total cost of painting the wall. The cost of painting is given as N$ 18.00 per square metre. Therefore, the total cost can be calculated as:

\[
\text{Total Cost} = \text{Total Area} \times \text{Cost per square metre}
\]

Substituting in the values:

\[
\text{Total Cost} = 100 \, \text{m}^2 \times 18 \, \text{N$} = 1800 \, \text{N$}
\]

Thus, the total cost to paint both sides of the wall is **N$ 1800.00**.