Please class is today and i still have all of my hw to i have no idea, be quick so much! given: △abc is equilateral. the radius of each circle is r. find: ab in terms of "r"

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer