The coordinates of A, B, C, and D are A(1,6), B(4,1), C(-7, -9), D(-4,-4). Is AB congruent t CD? Justify your answer.

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?

What is the perimeter of an equilateral triangle if each side is (x+3)?

Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.