A rectangle is twice as long as it is tall. It's height is 5 centimeters. What is the area in square centimeters?

Let's first find the length of the rectangle:

Height = 5 cm
Length = 2 * Height = 2 * 5 cm = 10 cm

Now, calculate the area of the rectangle:
Area = Length * Height
Area = 10 cm * 5 cm
Area = 50 square centimeters

Therefore, the area of the rectangle is 50 square centimeters.