What is the area of a square pig pen that has a perimeter of 72 feet?

324 ft^2

Step-by-step explanation:

P = 4s  for a square where s = side length

72 = 4s

Divide each side by 4

72/4 = 4s/4

18 =s

The side length is 18

A = s^2 for a square

A = 18^2

A = 324 ft^2

b

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb