Question

The image below is a triangle drawn inside a circle with center O:

Answer 1

Which of the following expressions shows the area, in square inches, of the circle?

(π = 3.14)

3 ⋅ 3.14 ⋅ 22
3.14 ⋅ 32
3.14 ⋅ 22
3.14 ⋅ 3

Answer 2

Well we know the diameter.

Answer 3

And we need the radius.

Answer 4

Do you know what the radius is?

Answer 5

The diameter is 6 so the radius is 3 the formula for the area of a circle is 2radius squared themes pi so three squared times pi is nine pi

Answer 6

is the radius 4 inches?

Answer 7

or 3 inches?

Answer 8

The radius is 3 because the line going through the center is 6 inches.

Answer 9

Do u see how the line with the length of six passes through the center?

Answer 10

Divide it by two because the radius is half the diameter

Answer 11

I'm not sure why it isn't one of the options

Answer 12

oh OK so its none of the answer choices :/ @Plasmataco

Answer 13

It should be 9 times 3.14

Answer 14

i'll ask for help ;) @jim_thompson5910

Answer 15

Ok. Don't use me as a source too much. @jim_thompson5910 is probably a better source because I'm Only 13

Answer 16

same lol

Answer 17

:3

Answer 18

this is a review and im bad at math :b

Answer 19

I'm guessing choice B is supposed to say \[\Large 3.14 \cdot 3^2\] ? or no?

Answer 20

yup

Answer 21

so its b? @jim_thompson5910

Answer 22

Oh yeahhhhh. It is the highest possibility

Answer 23

OK thanks! :)

Answer 24

yeah it's B since you use the area of a circle formula \[\Large A = \pi*r^2\]