Question

geo help

Answer 1

@Kainui

Answer 2

So you kind of have to work backwards on this one. The area of the square must relate to one of the sides of the square. The reason you want to do that is because the side of the square is the same as the diameter of the circle which is what you need to find the area of the circle.

Answer 3

so the radius of the cicle is 5 am i right?

Answer 4

then just do (pi)r^2

Answer 5

i have one more

Answer 6

The ratio of the length around a circle to its angle is always the same. So you can look at the circumference divided by 360 degrees and set that equal to the arc length divided by the amount of degrees you're given, 80.

\[\frac{ circumference }{ 360 \deg }=\frac{ arc }{ 80 \deg }\]

Answer 7

thank you so much!

Answer 8

Yeah, if it's not entirely obvious why that's true, you should just spend a few seconds to think about why it would be true. That way when the test rolls around you're not trying to memorize it, you'll just sort of figure it out again since it makes sense.