Ask your own question, for FREE!
Mathematics 9 Online
OpenStudy (sbuck98):

Someone check my answer please

OpenStudy (sbuck98):

c

OpenStudy (ltrout):

Where's your work?

OpenStudy (sbuck98):

Can you tell me if I'm correct or incorrect?

OpenStudy (ltrout):

Which one have you chosen?

OpenStudy (sbuck98):

c

OpenStudy (ltrout):

Nevermind, got it. The spot was white above. Lemme check one sec.

OpenStudy (ltrout):

So we're finding the blue portion correct?

OpenStudy (ltrout):

If so, you answer would be wrong. You want to find the blue portion after you subtract the circle's area from it.

OpenStudy (sbuck98):

Oh okay

OpenStudy (sbuck98):

so D?

OpenStudy (ltrout):

No. Do you know what the area of the circle would be?

OpenStudy (ltrout):

The formula to find area is Pi * R. And the diameter is 2ft in this picture so the radius would be 1ft. 1 * Pi is Pi so 4ft (area of the square) - Pi would be the answer. So B.

OpenStudy (sbuck98):

Okay, can you check another one for me?

OpenStudy (ltrout):

Sure!

OpenStudy (sbuck98):

For this I got A

OpenStudy (sbuck98):

OpenStudy (kayders1997):

When you are finding the area of a shaded part like this inside another shape you are going to always subtract your looking at a smaller area what what you first started with

OpenStudy (kayders1997):

Sorry that was for question one btw

OpenStudy (anonymous):

Yep, A looks correct for that one. 4^2=16 (16*Pi)/4=4*Pi (4*Pi)*3=12*Pi

OpenStudy (kayders1997):

Agreed @lemonhead4jesus

OpenStudy (sbuck98):

Can you help with more if I repost?

OpenStudy (anonymous):

Yep!

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!