the area of a circle is 48pi. find the circumference?

Answer 1

Area = πr^2
48π = πr^2
48 = r^2
r = √48 = 4√3

Circumference = 2πr
Circumference = 2π(4√3)
Circumference = 8π√3

That's the exact answer...you can take an approximation if you'd like.

Answer 2

A=pi*radius squared
if area is 48pi, divide by pi and find the square root of 48 (something between 6 and 7)

this can be substituted into the circumfrence formula,
C=2*pi*radius

then u solve for C

Answer 3

ok so first we should consider what you have first
the area and that is 48pi

Now you have to find out how to use that. That is really easy because you should know the formula to find out the area of a circle.
A = pi r^2
so lets plug in 48pi
48pi = pi r^2
now we should solve for the radius
so devide each side by pi giving us
48= r^2
now we can simply take the square root of each side
so we have
48^.5 = r

Now that you have the radius you can find the circumference
and the formula for circumfrence would be
2 pi r
well we know r so we can solve for the circumfrence
2 pi (48^.5)

and if you want a decimal number just plug that into a calculator.

Answer 4

area of a circle is equal to pi times the radius squared

so the radius of your circle would be equal to the square root of 48

the circumference of a circle is equal to two times the radius times pi

so with a radius equal to the square root of 48 and you multiply it by 2 then

the circumference would be 2 times the square root of 48 times pi

simplify the 2 times the square of 48..... since 48 equals 3 times 16 and .... the square of 16 is equal to 4 then your final answer would be

8pi times the square root of 3

Answer 5

Area is pi times radius squared, so 48 is the square of the radius. First find the Sq Rt of 48 then plug into:

(2*(sq rt 48)) * pi
circumference is pi times diameter

Answer 6

48pi=pi r^2

r=4 sqrt(3)

Answer 7

circumference is pi times the diameter
Area is pi times the radius squared