(a)Recall that the circumference of a circle is given by the following formula:
[tex]C=\pi d.[/tex]
Where d is the diameter of the circle.
Substituting d=14 ft in the above formula, we get:
[tex]C=\pi(14ft)\approx43.98ft\text{.}[/tex]
(b) Recall that the area of a circle is given by the following formula:
[tex]A=\frac{\pi d^2}{4}.[/tex]
Substituting d=14 ft in the above formula, we get:
[tex]A=\frac{\pi(14ft)^2}{4}=49\pi ft^2\approx153.94ft^2.[/tex]
Answer:
(a)
Exact solution:
[tex]14\pi ft.^{}[/tex]
Approximation:
[tex]43.98\text{ ft.}[/tex]
(b) Exact solution:
[tex]49\pi ft^2\text{.}[/tex]
Approximation:
[tex]153.94ft^2.[/tex]
