Answer: A) 45 ft
Step-by-step
The yardstick is 3ft tall since 1 yard = 3ft. It is 3 times as tall as its shadow. The tree has a 15ft long shadow. The tree should also be 3 times as tall as its shadow. The tree is 15*3ft tall, so it is 45ft tall. I attached an image of the diagram I made.
Answer:
12ft/min = 720ft/hr
Step-by-step explanation:
you just mulitply 12 by 60 because there are 60min in an hour.
Answer:
0.531 s
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