What is the radius of the base of the cylinder below? A cylinder with height of 36 inches and diameter of 42 inches.

inches

What is the greatest common factor of 6a, 8a^{2}, and 14?

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.