Question 421312

the radius extends form (-1,2) to (0,-1); so, find the distance between these points

*[invoke Distance_Formula_for_Coordinate_Plane -1, 2, 0, -1]



the {{{distance=radius}}}; so, the radius {{{r=3.16}}}

find the area of the circle:

{{{A=r^2(pi)}}}

{{{A=(3.16)^2(pi)}}}

{{{A=(9.9856)(pi)}}}...round it

{{{A=10(pi)}}}