The area of a circle is given by the following formula
[tex]A=r^2\pi[/tex]
Where r represents the radius of the circle.
We have a circle with a diameter equal to 1.4 ft. The radius is half of the diameter, this means the radius of our circle is
[tex]r=\frac{d}{2}=\frac{1.4}{2}=0.7[/tex]
Using this value in our formula, we have
[tex]A=(0.7)^2\cdot\pi=0.49\cdot3.14=1.5386\approx1.5[/tex]
The area of this circle is 1.5 ft².
