Question

Help me please circle

Answer 1

okay it is 10 and try asking @CrazyCountryGirl

Answer 2

IDK,

Answer 3

The answer is not really '10'.

Let me help you get through this. :)

The equation of a circle is given by \((x-a)^2 + (y-b)^2 = r^2\)
Where 'r' is the radius
And (a,b) is where the circle is centered.
As here there is no (a,b) we say it is centered at the origin (0,0)

So in the equation

x^2 + y^2 = 4

What do you think the radius'll be? :D

Answer 4

@ducati289 @mathisntfun

Answer 5

@aprilann143 ?

Answer 6

2

Answer 7

Yes, that is correct! Good job. :)