Question

emmas dining room is 3 meters wide and 7 meters long. emma wants to install wooden trim around the top of the room. the trim costs $7.69 per meter. how much will it cost emma to buy enough trim?

Explanation:

Step1: Calculate the perimeter of the room

The formula for the perimeter of a rectangle is \(P = 2(l + w)\), where \(l = 7\) meters (length) and \(w = 3\) meters (width).

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Step2: Calculate the total cost

The cost per meter is \(\$7.69\). Multiply the perimeter (number of meters) by the cost per - meter.

$$ \text{Cost}=20\times7.69=\$153.8 $$

Answer:

\(153.8\)