Answer:
The actual length of a wall by using a scale of 1:150 is 7.5 m.
Step-by-step explanation:
The drawing scale is the ratio of drawing size to actual size. To determine the scale of the drawing, we need to know about the formula first which is given by :
scale = drawing size : actual size
From that question, we know that :
scale = 1 : 150
drawing size = 5 cm
Based on the scale we can change the formula to
actual size = drawing size / scale
actual size = 5/ (1:150)
actual size = 5 x 150
actual size = 750 cm
Converting to the meter by dividing with 100
actual size = 750/100 m
actual size = 7.5 m
Hence, the actual length of a wall is 7.5 m
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