469,745 views
13 votes
13 votes
The area of a circle is 36 square feet. What is the diameter?

User Gewure
by
3.7k points

2 Answers

11 votes
11 votes

Answer:


area = \pi {r}^(2)


36 = 3.14 * {r}^(2)


(36)/(3.14) = {r}^(2)


{r}^(2) = 11.46


r = √(11.46)


r = 3.39


diameter = 2 * radius


diameter = 3.39 * 2


= 6.78

User SuitUp
by
2.5k points
20 votes
20 votes

Answer:

The diameter is 6.76

Please read the exaplanation... it always helps!

Explanation:

Area of circle = r^2 pi

if the area is 36 then...

36 = r^2 pi to solve for r divide both sides by pi

36/pi = r^2

11.45 = r^2 take the square root of both sides

√11.45 = r RADIUS = 3.38

then multiply by two since the diameter is 2 (radius) and you get...

diameter = 6.76

i hope this helpssssss!!!!!!!

User Kamaradclimber
by
2.2k points