1. find the perimeter of the triangle with coordinates a (1, 2), b( 6, 5), and c (1, 7)

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Which expression gives the area of the triangle shown below

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?