Answer: The formula for the area of a circle is:
A = πr^2
where A is the area, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.
In this case, the radius is given as 4ft. So, we can substitute r = 4ft and π = 3.14 in the formula to get:
A = 3.14 x (4ft)^2
A = 3.14 x 16ft^2
A = 50.24ft^2
Therefore, the area of the circle with radius 4ft is 50.24 square feet.
Explanation: