Find the equation of the ellipse whose vertices are `(0,+-6)` and eccentricty is 1/3.

Find the equation of the ellipse whose foci are (3,0) and(-3,0) and eccentricity 2/3.

Find the area of the triangle whose vertices are (0, 0), (a, 0) and (0, b).

Find the equation of the hyperbola with vertices (+-4,0) and foci at (+-6,0) .

Find the equation of the circle whose centre is (2, 3) and which touches the line 3x - 4y - 1 = 0.

Find the equation of a circle whose centre is (1,2) and radius 2.

Find the areas of the triangle whose vertics are (4,4),(3,-2),(-3,16)

Find the areas of the triangle whose vertics are (a,bc),(b,ca),(c,ab)

Find the area of a triangle whose vertices are A(3,8) ,B(-4,2) and C(5,-1).

Find the area of the triangle whose vertices are (5,2),(-9,-3),(-3,-5)

Find the equation of the circle whose radius 4 and which is concentric with the circle x ^2 + y ^2 + 2x - 6y = 0.