Well first, we must remember the formula for the area of a circle.
The formula for the area of a circle is:
PiR^2, or Pi • R^2.
Basically this means 3.14 (Pi) • R • R (Radius).
We have our radius, 4, so we can plug in our numbers to solve.
3.14 • 4 • 4 is our formula, so let's solve.
4 • 4 = 16.
16 • 3.14 = 50.24.
Remember when we solve for the area, we use units squared (units^2).
Your answer is 50.24 cm^2.
I hope this helps!
Answer:
:
:
Step-by-step explanation:
It is given the average cost of the flight nationwide is $ 445.99
I wanted to to determine that the true average is greater than $ 445.99
Let the hypothesis that the true average is actually greater than $445.99
Therefore,
the for the test is :
:
And the alternate hypothesis is :
:
Answer:
900 degree
Step-by-step explanation: