Khan Academy Question

Question

The penguin exhibit at a zoo has raised circular island that is surrounded by water. diameter of the island is 20 meters. one swims halfway how far did he swim?

Answer 1

Hi, keep in mind that the questions about distance usually give you a hint on the two reference points in which you are measuring distance.

If the penguin swims from any wedge of the pool to the center (half way), the penguin has swim half of the diameter (also known as the radius).

Diameter of the pool d=20m, the traveled distance, x=10m.