the rectangle is twice as long as tall. its height 5 centimeter what is the area in square centimeter

If the height of the rectangle is 5 centimeters, and it is twice as long as tall, then the length of the rectangle would be twice that of the height, which is 5 x 2 = 10 centimeters.

The area of the rectangle is calculated by multiplying the length and the width, so the area would be 10 x 5 = <<10*5=50>>50 square centimeters. Answer: \boxed{50}.