Answer:
12 cm
Explanation:
The ratio of feet to cm is 12:3. Set up a ratio to find the length of the green line in cm.
12 feet ÷ 3 cm = 48 ft ÷ x
Cross multiply and divide.
3 x 48 = 12 × x
144 = 12x
x = 12
The actual length of the green line is 12 cm.
Hope that helps.