1. The problem is to convert 15 meters and 2:75 (which seems to be a typo or unclear) into centimeters. 2. First, clarify the units: 1 meter = 100 centimeters. 3. Assuming 2:75 means 2.75 meters, convert both parts to centimeters. 4. Convert 15 meters to centimeters: $$15 \times 100 = 1500$$ cm. 5. Convert 2.75 meters to centimeters: $$2.75 \times 100 = 275$$ cm. 6. Add the two results: $$1500 + 275 = 1775$$ cm. 7. Therefore, 15m and 2.75m together equal 1775 cm.