Step-by-step explanation:
Let's calculate the area of the plastic sheet required for making the box:
(i) The area of the sheet required is the sum of the areas of the five sides of the box (since it's open at the top).
\[ \text{Area} = \text{2(length} \times \text{width) + 2(length} \times \text{height) + 2(width} \times \text{height)} \]
Given:
\[ \text{Length} = 1.75 \, \text{m} \]
\[ \text{Width} = 1.25 \, \text{m} \]
\[ \text{Height} = 0.75 \, \text{m} \]
Now, substitute these values into the formula to find the area.
(ii) Once you find the area, you can calculate the cost of the sheet by multiplying the area by the cost per square meter.
\[ \text{Cost} = \text{Area} \times \text{Cost per square meter} \]
Given:
\[ \text{Cost per square meter} = 15.50 \, \text{USD} \]
Now, substitute the area into the formula to find the cost. Calculate the result to get the final answer.
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