The area of circle z is 64 pi ft^2 what is the value of r?

we know that

The area of the circle is equal to

where

r is the radius of the circle

In this problem we have

substitute in the formula and solve for r

Simplify

Square root both sides

therefore

the answer is

The value of r is

tip $2.90

total $17.40

none.

step-by-step explanation:

m

1

=

5

m1=5

b

=

−

1

b=-1

find the slope and y-intercept of the second equation.

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m

2

=

0

m2=0

b

=

−

6

b=-6

compare the slopes

m

m of the two equations.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

compare the two slopes in the decimal form. if the slopes are equal, then the lines are parallel. if the slopes are not equal, then the lines are not parallel.

m

1

=

5

,

m

2

=

0

m1=5,m2=0