How many liters of water can fit in an aquarium measuring 30, 15, and 20 cm? Equilateral cylinder. For example, 1 dm3 = 103 cm3 = 1000 cm3. Or change m3 to ft3. A hectolitre of water will fit in an equilateral cylinder. The calculator answers the questions: 30 m3 is how many ft3? Answer and Explanation: So, 5' 11'' is 1. Units of volume are the cubes of units of length. Conversion cubic meters to cubic feet, m3 to conversion factor is 35. So, we read 5' as five feet and 11'' as eleven... See full answer below. 4 meters quickly and easily. 4 meters to feet, we multiply 1.