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Part 1
Barbara photographs a bird. The bird measures 7.7 cm tall in the photo and is actually 30.5 cm tall. Approximately how long is the bird's beak if it measures 1.1 cm in the photo?
To find out the actual length of the bird's beak, we can use a proportion based on the information given.
Let x be the actual length of the bird's beak.
7.7 cm (height in photo) = 30.5 cm (actual height)
1.1 cm (length of beak in photo) = x (actual length of beak)
Using the proportion:
7.7 cm / 30.5 cm = 1.1 cm / x
Cross multiplying:
7.7 * x = 30.5 * 1.1
7.7x = 33.55
x = 4.35 cm
Therefore, the bird's beak is approximately 4.35 cm long in actual size.