If a circle has a radius of 6.2feet what is the area of the circle in square feet rounded to the nearest tenth foot?

1 Answer
Apr 23, 2018

Exact: #38.44pi# sq. ft.
Approximate (using #3.14# as #pi#): #120.7016# sq. ft.

Explanation:

Recall that the area of a circle is given by

#A=pir^2#

We know the radius (#r#), so we can plug into our area formula to get:

#A=(6.2)^2pi#

#color(lime)(=>38.44pi ft^2)#

Our exact answer is in lime above, but we can use #3.14# for #pi#. We get:

#color(blue)(=>38.44*3.14)#

#color(blue)(=>120.7016 ft^2)#

Either one of our answers, in lime green or blue, are acceptable, the lime answer is the exact answer, however.

Hope this helps!