Answer:
12 cm
Step-by-step explanation:
You would only have to focus on the green line and then you just have to divide it by 12 and you get 4 and than you multiply 3 cm by 4 and the answer for the actual length of the green line will be 12 cm.
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.
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Take out the greatest common factor
The GCF is 3
3(9w^2-4)