Identify the circumference of ⊙s in which a=64π ft^2.

c = 24π ft
c = 32π ft
c = 16π ft
c = 8π ft

C = 16π ft

Step-by-step explanation:

If we know the area

A = pi r^2

64 pi = pi r^2

Divide each side by pi

64 = r^2

Take the square root of each side

8 = r

The radius is 8

Now we can find the circumference

C = 2 *pi*r

C = 2*pi*8

C = 16pi

Step-by-step explanation:

The formula of an area of a circle:

r - radius

We have

Substitute:

              divide both sides by π

The formula of a circumference:

Substitute:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

replication and blocking

step-by-step explanation: