the distance between any two bases on a baseball diamond is 90 feet.What is the best approximation for the direct distance from home plate to second base?
A baseball diamond's four bases form a square with 90 foot sides. A right triangle is formed by home plate, first and second base. The distance from second base to home is the hypotenuse of that triangle.
Apply the Pythagorean theorem
a^2 + b^2 = c^2 to the right triangle and you will have the answer. In this case, a = b = 90. Solve for c.