Ask your own question, for FREE!
Geometry 16 Online
OpenStudy (sbuck98):

Someone help ASAP

OpenStudy (sbuck98):

OpenStudy (sbuck98):

@Liv1234

OpenStudy (seratul):

What is the formula for the area of a circle?

OpenStudy (sbuck98):

idk

OpenStudy (sbuck98):

@Seratul

OpenStudy (seratul):

Search it up on google :P

OpenStudy (seratul):

Actually, ill tell you. Area is r^2 times pie.

OpenStudy (seratul):

So do you know how to find the radius of this circle?

OpenStudy (sbuck98):

no:(

jimthompson5910 (jim_thompson5910):

\[\Large \text{Area of a circle} = \pi*r^2\] \(\Large \pi\) is the greek letter `pi`. There is no 'e' in the spelling of this greek letter `pi`. Don't confuse it with the treat that is baked in the oven.

OpenStudy (seratul):

So to find radius, you must divide the diameter by 2. The diameter is the long line from both sides of the circle. In this cause, it would be 14. Now, we must divide the radius by 2 to get 7. Next multiply 7 by 7 and tell me what you get.

OpenStudy (sbuck98):

49

OpenStudy (seratul):

Correct! And since it says pie form, you leave it as that. If it doesn't you must multiply by pie.

OpenStudy (sbuck98):

Could you help me some more?

OpenStudy (sbuck98):

@Seratul

OpenStudy (seratul):

Tag me in the next question.

jimthompson5910 (jim_thompson5910):

correct, so that's why the area of the circle is \(\Large 49\pi \ \text{square feet}\) if you must know the approx area, then you can replace the \(\Large \pi\) with `3.14` to get \[\Large 49\pi = 49*\pi = 49*3.14 = 153.86\] the approx area is 153.86 square feet If you desire more accuracy, use more digits of `pi`

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!