Answer:
16
Step-by-step explanation:
area of a circle is pi x r x r
since it is a quarter
1/4 x pi x 8 x 8 = 16 x pi
What is the speed of a 3 cm diameter roll if it has a velocity of 1220 yards/hour?
1 answer:
Answer:
The speed of the roll is 1239.52 revolutions per minut (1239.52 rpm).
Step-by-step explanation:
In this problem we want to know the angular speed of the roll, knowing its tangencial speed (1220 yards/hour).
The relation between the angular speed and the tangencial speed is
In this case we have a diameter of 3 cm and a velocity of 1220 yards/hour. So we can write
So the speed of the roll is 1239.52 revolutions per minut (1239.52 rpm).
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That’s what I got I didn’t know how to type it so I just took a photo
Answer:
The principal must be = $8991.88
Step-by-step explanation:
Formula for compound interest is:
Where A is the amount after 't' years.
P is the principal amount
n is the number of times interest is compounded each year.
r is the rate of interest.
Here, we are given that:
Amount, A = $15000
Rate of interest = 13 % compounded quarterly i.e. 4 times every year
Number of times, interest is compounded each year, n = 4
Time, t = 4 years.
To find, Principal P = ?
Putting all the given values in the formula to find P.
So, <em>the principal must be = $8991.88</em>