The area of a rectangle is calculated using the formula:
Area=Length×Width\text{Area}=\text{Length}\times \text{Width}Area=Length×Width
If the length is not specified but the width is 10 cm, the area would be:
Area=Length×10 cm\text{Area}=\text{Length}\times 10,\text{cm}Area=Length×10cm
To get the exact area, you need the value of the length in centimeters. Once you have the length, multiply it by 10 cm to find the area in square centimeters (cm²).