What is the surface area of a cone with a radius of 5 units and slant height of 8 units?
+
What is the Pythagorean theorem which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides?
+
What is the equation of a hyperbola with vertices at (±3,0) and foci at (±5,0)?