Question

Find the area of a circle in feet with the radius being 3'.

Answer 1

Answer:

28.27 ft²

Step-by-step explanation:

$A=\pi r^2$ where $r$ is the radius

Plug in 3 for the radius

$A=\pi (3)^2\\A=9\pi$

$A=28.27$ (approximate answer when rounded to the nearest hundredth)

Therefore, the area of the circle is 28.27 ft².

I hope this helps!

Answer 2

Answer:

exact area: 9 ft²

approximate area: 28.3 ft²

Step-by-step explanation:

An area cannot be in feet. It must be in a square unit such as square feet.

A = r²

A = ()(3 ft)²

A = 9 ft²

A = 9(3.14159) ft^2 = 28.3 ft²

Answer:

exact area: 9 ft²

approximate area: 28.3 ft²