Respuesta :

BeAns000

Answer:

A≈1243.4ft²

Step-by-step explanation:

A=πr2

C=2πr

Solving forA

A=C2

4π=1252

4·π≈1243.39799ft²

tcd55335

Answer:

1243.4

Step-by-step explanation:

You can find the area of a circle from circumference with a few different formulae.

c = 2πr, or 19.89 * π = 125

Then, now that you know the radius, you can use the formula A = πr².

1243.4 = 395.79

Hope that this helps!