A guy wanted to calculate volume of a red rubber ball... There was a guy who wanted to know how to calculate the volume of a red rubber ball. He first took it to a mathematician, who measured its radius and used the formula V=4/3*pi*r^3 to find it's volume. Next, our man went to a physicist, who immersed the ball in a bowl full of water. He then measured the amount of water which overflowed and calculated the volume of the ball. Still not satisfied, our man takes the ball to a mechanical engineer. The engineer says, ""Wait a moment, I got this."" He gets up and skims through the books laid out on his shelf. ""Ah, this should do it."", he says and pulls out a big fat hard bound book titled - ""The Mechanical Engineer's Handbook to Red Rubber Balls""