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Mathematics 18 Online
OpenStudy (quickthing):

Find the area of the white region.

OpenStudy (quickthing):

OpenStudy (anonymous):

What a garbage picture.

OpenStudy (quickthing):

Haha thanks c:

OpenStudy (anonymous):

Subtract the inner circle area from the outer circle area.

OpenStudy (quickthing):

I'll upload a better one....

OpenStudy (anonymous):

Can you find the area of both circles?

OpenStudy (quickthing):

OK thanks, I'll try.

OpenStudy (quickthing):

But would 16 be the diameter of the outside circle?

OpenStudy (quickthing):

Yes I can.

OpenStudy (quickthing):

For the middle one it's 8*3.14

OpenStudy (quickthing):

25.12

OpenStudy (quickthing):

but I don't know about the outside one.

OpenStudy (quickthing):

I got 50.34

OpenStudy (quickthing):

for the area of the white region

OpenStudy (anonymous):

What are you using for the area?

OpenStudy (anonymous):

\[ \text{Area}=\pi (\text{radius})^2 \]

OpenStudy (quickthing):

omg i'm so stupid

OpenStudy (quickthing):

never mind, you can leave and i'll tell you when i'm done

OpenStudy (quickthing):

Oh wait... yeah

OpenStudy (quickthing):

I used that formula.

OpenStudy (quickthing):

8(3.14)=25.12 16(3.14)=75.36

OpenStudy (quickthing):

75.36-25.12=50.24

OpenStudy (quickthing):

see?

OpenStudy (quickthing):

do you think that's right?

OpenStudy (quickthing):

k then hahaha

OpenStudy (anonymous):

You didn't square the radius

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