Question

Find the circumference of a circle with an area of 676pi

Answer 1

area =676π

area=πrsq.=676π

then pie cut to pie

and rsq. =676

and 676is the root of 26

circumference of circle is 2πr

r=26

2×22/7×26

then answer is 163.4

Answer 2

The circumference of the circle is 52π

Explanation:

To solve this exercise we first have to calculate the radius of the circle, for this we will use the formula of area of ​​a circle and we will clear the radius

a = area = 676π

r = radius

a = π * r²

we clear r

r = √(a/π)

now we replace the known values

r = √(676π/π)

r = √(676)

r = 26

now we use the formula to calculate the circumference of a circle

c = π * 2r

c = π * 2 * 26

c = 52π

The circumference of the circle is 52π