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21 January, 06:44

The scale drawing of a rectangular room measures 10cm long by 6cm wide. The actual width of the room is 9 metres. What is the actual perimeter of the room, in metres?

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  1. 21 January, 08:19
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    48 meters

    Step-by-step explanation:

    The first thing is to calculate the scale, since we know both widths it is possible:

    we pass the 9 meters to centimeters = 900 cm

    900/6 = 150

    So the scale would be 1: 150

    Which means that the length is 150 times bigger.

    10 * 150 = 1500cm or what equals 15m

    the perimeter is the sum of all the sides, therefore:

    P = 15 + 15 + 9 + 9

    P = 48

    Which means that the perimeter of the room is 48 meters
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