🌂️ Let’s solve the problem: 🤔

Step 1: Convert the area from hectares to square meters 📏
1 hectare = 10,000 square meters 📈
1.5 hectares = 1.5 × 10,000 = 15,000 square meters 📊

Step 2: Convert the rainfall from centimeters to meters ⛔️
5 cm = 0.05 m 📏

Step 3: Calculate the volume of water that falls on the ground 💧
Volume = Area × Depth 📈
= 15,000 square meters × 0.05 meters 📊
= 750 cubic meters 💧

The final answer is: 750 cubic meters 🌂️.