On a scale drawing, 1 millimeter equals 4 centimeters. if a line on the drawing is 45 millimeters, how many meters is it actually?

18 m
180 m
1,800 m
1.8 m

D. 1.8 m

Step-by-step explanation:

On a scale drawing,

1 millimeter = 4 centimeters.

A line on the drawing is 45 millimeters, then

1 mm - 4 cm

45 mm - x cm

Write a proportion:

Cross multiply:

Note that

then

1 m - 100 cm

y m - 180 cm

Write a proportion:

Cross multiply:

1.8 m

Step-by-step explanation:

On a scale drawing,

1 millimeter = 4 centimeters.

A line on the drawing is 45 millimeters, then

1 mm - 4 cm

45 mm - x cm

hope this helps!

~mina