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9 June, 09:59

The scale drawing of a concrete pad has a length of 9.1 cm, a depth of 2.2 cm and a width of 3.8 cm.

Using the scale drawing, what is the actual depth of the concrete pad if the actual width is 418 cm?

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Answers (2)
  1. 9 June, 10:45
    0
    242 cm

    Step-by-step explanation:

    1. Find the scale factor

    A scale factor (SF) is the ratio of two corresponding lengths in similar figures.

    SF = actual distance/scale distance

    If the scale width is 3.8 cm,

    SF = 418 cm/3.8 cm = 110

    2. Calculate the actual depth

    110 = actual depth/2.2 cm

    Actual depth = 110 * 2.2 cm = 242 cm
  2. 9 June, 11:39
    0
    the answer is 242 cm
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