The line y = (3x + 20)/4 intersects a circle centered at the origin at A and B. We know the length of chord \overline{AB} is 20. Find the area of the circle.
A circle centered at $(3,2)$ is tangent to the line $y=(x+1)/3.$ Find the area of the circle.
We are given $O = (0,0),$ $A = (5,2),$ and $B = (6,-3).$ Find $[OAB].$ We are given $A = (2,5),$ $B = (-5,2),$ $C = (-2,-5),$ and $D = (5,-2).$
Find $[ABCD].$
Find the area of the region bounded by the lines $y=5$ and $5x+2y=25$ and the coordinate axes.
