Length of train : 100
length of bridge : 400
distance covered by the train to cross the bridge : (100 + 400) = 500
time taken by the train to cross : 30
speed = distance / time
speed = 500/30
speed = 16.67 meters per second <===
Juan is 13 years old and his sister is 5 years old.
Answer:
706.86ft²
Step-by-step explanation:
A=πr2=π·152≈706.85835ft²
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