Answer:1385.44mm sq
Step-by-step explanation: surface area of a circle = pi x radius squared
3.142 x 21 squared
Average speed: distance traveled/elapsed time
= 75/30
= 2.5 meters per second.
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Answer:
28%
Step-by-step explanation:
you can divide 276 by 100 to get how much each individual percentage is worth so when you multiply that number by 28 you get 77.28
Answer:
The pressure at 50 feet is 2.51515 atm
Step-by-step explanation:
we are given equation as

where
p(d) gives the pressure, in atmospheres (atm)
a depth d in the sea (d is in feet)
We are given
d=50 feet
So, we can plug d=50 and find p


So,
The pressure at 50 feet is 2.51515 atm