What is the approximate area of a circular pond?

"picture of a circle with diameter of exactly 250 feet"

the answer choices are:

a. 392.5 ft2

b. 49,062.5 ft2

c. 78,125 ft2

d. 196,250 ft2

Step-by-step explanation:

The formula of an area of a circle:

r - radius

We have the diameter d = 250 ft. We know: d = 2r.

Therefore r = 250 : 2 = 125 ft.

Substitute:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i