What is the diameter of a circle whose area is #16##pi#?
2 Answers
Dec 25, 2015
Explanation:
Use the formula for the area of a circle:
#A=pir^2#
Here, the area is
#16pi=pir^2#
Divide both sides by
#16=r^2#
Take the square root of both sides:
#sqrt16=sqrt(r^2)#
#4=r#
Since the radius of the circle is
#d=4xx2=8#
Aug 8, 2018
Explanation:
Recall the formula for the area of a circle:
We see that our radius is
Recall that the diameter is twice the length of the radius, so we can multiply this by
Hope this helps!