Answer:
176.71 cm
or
56.25π cm
Step-by-step explanation:
The formula for the circumference of a circle is:
C = πd
Where C is the circumference and d is the diameter
Let's substitute the circumference given into this formula:
C = πd
15π = πd
Now, we can solve this equation for d.
Divide by π on both sides:
15π = πd
/π /π
15 = d
Therefore, the diameter is 15 cm.
We need to find the area. The formula for the area of a circle is:
A = πr²
First, let's find the radius. The radius is half of the diameter, so divide the diameter by 2.
15/2 = 7.5
radius = 7.5 cm
Now, we can solve for the area.
Substitute into the formula for area:
A = πr²
A = π(7.5²)
A = π(56.25)
A ≈ 176.71
Therefore, the area is approximately 176.71 cm, or in terms of pi, 56.25π.
How often weekly monthly or yearly
It is $69 because if every time you withdraw money you get $3 and you took $20 out 3 times that 20x3 is 60 and then plus $3x3 is nine add it all together it is $69
Answer:
Step-by-step explanation:
a) the probability that the person is age 45 or older
=
b) the respondents did not believe the Social Security system will be secure in 20 years
i.e. prob that under 45 does not believe in this is 0.6684
the probability that the person is younger than age 45 and believes that the Social Security system will be secure in 20 years
=
c) the probability that the person is 45 years old or older given that the person selected believes the Social Security system will be secure in 20 years=Prob for both as in part b/prob he believes in SSS
=
=0.778
d) As shown above 0.6684