Answer:
The radius is 5 in
Step-by-step explanation:
The area of a circle is given by the formula
A = pi *r^2
We know the area = 78.5 in^2 (volume would be in^3 area is in^2)
78.5 = 3.14*r^2
Divide each side by 3.14
78.5/3.14 = 3.14/3.14*r^2
25 = r^2
Take the square root of each side
sqrt(25) sqrt(r^2)
5 =r
I think the answer is C. 8 ,cause im smart.
Answer:
Completing the square we have
Step-by-step explanation:
we have to divide the coefficient of x by half, and then raise it to the square, that number is added and subtracted at the same time
later we can write
we know
so we have
abs(x+8)=
we have
x+8=
x+8=
finally we have
16/3 is the answer if you divide them all they will give you the answer and it shows 16/3 with a repeating decimal of 3