Final answer:
The area of the rectangle is calculated by multiplying the given length (5cm) by the width (10cm), which is two times the length, resulting in an area of 50cm².
Step-by-step explanation:
The length of a rectangle is given as 5cm, and the width is said to be two times the length. To calculate the area of the rectangle, we use the formula Area = length × width. Given the width is two times the length, this means the width is 2 × 5cm = 10cm. Therefore, the area is 5cm × 10cm = 50cm².