Answer:
Scale used for drawing is 1 cm = 1.75 m
Step-by-step explanation:
An architect makes a scale drawing of a house.
Actual width of porch = 7 meters
Width of porch on drawing = 4 cm
So, Actual width = Drawing width
So, 4 cm = 7 m
1 cm = 1.75 m
So, Scale: 1 cm = 1.75 m
So, Option B is correct
B)1 cm = 1.75 m
Hence scale used for drawing is 1 cm = 1.75 m
