Question

is this right?

Answer 1

No, that is wrong.

You need to find the area of the smaller circle and subtract that from the area of the bigger circle to find the area of the shaded area.

Answer 2

Correct!

Answer 3

Sure, make another post.

Answer 4

The first attachment has the correct answer.

Answer 5

First question in the second attachment is wrong.
Second question in the second attachment is also wrong.

Answer 6

And the question in the third attachment is also wrong.

Answer 7

On this one:
http://assets.openstudy.com/updates/attachments/571e73a2e4b075db04a31af8-peachy1-1461613710738-capture.png

The first question.

The diameter is 18.

Radius is diameter/2. We need to find the radius and then plug it in to the area formula.

For the second question:

The diameter is 14. We need to find the radius and then find the area. Once we find the area, we have to divide by 2, because each plant will be taking 2 square foot of space.

Answer 8

On this one: http://assets.openstudy.com/updates/attachments/571e73a2e4b075db04a31af8-peachy1-1461613738716-capture.png

The area of a circle is \(\Large \bf Area = \pi r^2\)

Now, If the radius is 1, the area is \(\pi\)
Now, if the radius is doubled to 2, the area becomes \( 4\pi\)

So, when the radius is doubled, what happens to the area?

Answer 9

Which one of the three do you not understand?

Answer 10

@Peachy1

If you look at what I told you above, you'll see that I told you that the last three you posted are wrong.