Perimeter, Area, Volume

Learn how to solve perimeter, area and volume problems.
When there isn't a measurement like m. or cm. or in. then write in Units for the answer.
For example: PERIMETER answer should be like 15 m or 15 Units
For example: AREA answer should be like 15 cm² or 15 Units²
For example: VOLUME answer should be like 15 in³ or 15 Units³